SAFIR2010 Interim Seminar Impact Tests (IMPACT) and Structures under Soft Impact (SUSI)

Size: px
Start display at page:

Download "SAFIR2010 Interim Seminar Impact Tests (IMPACT) and Structures under Soft Impact (SUSI)"

Transcription

1 SAFIR2010 Interim Seminar Impact Tests (IMPACT) and Structures under Soft Impact (SUSI) Kim Calonius, Ilkka Hakola, Simo Hostikka, Juha Kuutti, Auli Lastunen, Hannu Martikainen, Arja Saarenheimo, Ari Silde VTT Markku Tuomala TUT Ari Kankkunen HUT

2 Projects IMPACT and SUSI Experimental testing of deformable and hard missile impacts against concrete structures is carried out in the IMPACT project Numerical models and methods for impact analyses are developed and verified based on the tests in the SUSI project

3 IMPACT, General Overview Impact test results are needed in developing and verifying analytical and numerical methods for designing protective barrier structures. The IMPACT test facility has been built to investigate impacts of deformable and hard missiles on reinforced concrete target structures. The facility is designed for medium scale tests with a target width of 2 m, a missile mass of about 50 kg and impact velocity in the range from m/s.

4 IMPACT, General Overview, Apparatus Debris shedding m = kg (missile) + 50 kg (piston) v = 60 m/s m/s Pressure missile + piston accumulator p = 5-25 bar 0.5m m v Target wall (2 by 2 m) Back pipes Kick back frame L 2 = 13.5 m Acceleration tube L 1 = 12 m Piston catcher

5 IMPACT, General Overview, Phases of Project The IMPACT testing apparatus has been designed and built in 2003 and 2004 The first preliminary tests were conducted on At the beginning the target was a hanging wall made of steel and concrete and the missile was shot from inside the acceleration tube Next the target was supported on bedrock with four supporting pipes and anchoring bolts In 2006 the missile was installed and shot on top of the acceleration tube In 2007 the new supporting frame and force measuring plate were constructed for shooting deformable and hard missiles on reinforced concrete and pre-stressed concrete structures with bending and shear reinforcement

6 IMPACT, General Overview, Apparatus Impact apparatus

7 IMPACT, General Overview, Force plate Second version of force plate

8 IMPACT, General Overview, Measurements The sensors used in IMPACT tests: 1. Transducers to measure wall deflections 2. Strain gauges glued on the reinforcement to measure strains 3. Strain gauges on the surface of the concrete wall to measure strains 4. Force transducers behind the force plate 5. Strain gauges in the support beams to measure impact forces 6. Strain gauges glued on back pipes to measure support reactions 7. High speed cameras to obtain video of impact incident 8. Laser sensors to measure the speed of the missile 9. Accelerometer at the back of the missile to measure the deceleration of missile 10. Pressure sensor to measure air pressure near the target during impact The data from sensors is gathered using a sampling frequency of 100 khz. The measuring system includes anti-aliasing filtering capability and simultaneous measurements

9 IMPACT, General Overview, Measurements Deflection transducers

10 IMPACT, General Overview, Missiles The missiles used in tests have been made of steel pipe, aluminium pipe or thin-walled steel ventilation tube The missile can be filled with water or light concrete The first tests were made using steel missiles and shot from inside the acceleration tube 3D missiles composed of Al-pipe and wing necessitate shooting on top of the acceleration tube. Other missile types, Al-pipe and steel pipe missiles, are shot similarly

11 IMPACT, General Overview, Missiles Spirally seamed ventilation tube, shot from inside of the acceleration tube

12 IMPACT, General Overview, Missiles Aluminium pipe missile placed on rails on top of the acceleration tube

13 IMPACT, General Overview, Missiles 3D-missile with a wing on top of the acceleration tube

14 IMPACT, General Overview, Concrete walls The first campaign was conducted using reinforced concrete slabs with dimensions 2 by 2.2 m and thickness of 150 mm with bending reinforcement and shear reinforcement in some cases. Target in series 1

15 IMPACT, General Overview, Concrete walls The second concrete wall test campaign was made with prestressed concrete walls with a thickness of 250 mm. Pre-stressing was carried out using post tensioning bars (Dywidag bars without injection). In some tests shear reinforcement with T-bars was introduced. Target in series 2

16 SUSI, Numerical analyses overview Post-analyses of the two presented tests (642: dry and 644: wet): FEM analysis using Abaqus/Explicit FEM analysis using LS-Dyna (Dry test 642) Simplified two degree of freedom model Load functions used in the models are calculated using Riera s method: F( t) V ( t) P ( x) ( x) V ( t) c M P ( x) c uncrushed 2 F(t) is impact force V(t) is missile velocity M uncrushed is uncrushed section mass (x) is missile mass distribution P c (x) is missile crushing force

17 Aluminium missiles in the studied tests Dry missile m=51.5 kg V=109 m/s Wet missile m=50.9 kg (inc. 28 kg water) V=105 m/s

18 Displacement sensor locations in dry and wet tests Dmax 2000 D1-WET D1-DRY 2100 Wall thickness 150 mm, reinforcement ratio 0.67%

19 Abaqus/Explicit finite element models 1) Wall shell element model 2) Wall and supporting frame shell and beam model Loading area Reinforcement modelled with rebar layers

20 Solid element model (LS-Dyna) Wall modelled with solid elements Rebars modelled with beam elements Loading area

21 Material properties for concrete Stress-strain curve for concrete 10-0,01-0,008-0,006-0,004-0, ,002 0,004 0, Stress (MPa) Strain (mm/mm) Material models used are concrete damaged plasticity model in Abaqus/Explicit and Winfrith model in LS-Dyna

22 Material properties for reinforcement steel Smeared stress to take into account the surrounding concrete Stress (MPa) A500HW MAT_1_ ,02 0,04 0,06 0,08 0,1 Strain (mm/mm) Experimentally measured stress-strain curve

23 Simplified 2 degree of freedom model for wall deformation Separate degrees of freedom for bending and shear deformations Modelled with two mass-spring elements Shear cone

24 Two degree of freedom model for shear deformable plate Spring behavior Shear behavior Bending behavior

25 Calculated and measured wall displacements of Test 642 (Locations D1 and Dmax) Test 642, wall deflection measured D1 Abaqus shell D1 Deflection [m] Abaqus shell Dmax Abaqus shell+beam D1 Abaqus shell+beam Dmax LS-Dyna D Time [s] LS-Dyna Dmax TDOF Dmax

26 Calculated and measured wall displacements of Test 644 (Locations D1 and Dmax) Test 644, wall deflection Deflection [m] measured D1 Abaqus shell Dmax TDOF Dmax Abaqus shell D Time [s] Abaqus shell+beam Dmax Abaqus shell+beam D1

27 3.E+06 Calculated and measured impact forces of Tests 642 and 644 Test 642 and 644 forces load E+06 2.E+06 1.E+06 Load functions calculated using Riera s method back pipes 642 Abaqus shell+beam 642 force [N] 5.E+05 load E back pipes E+05-1.E+06 time [s] Abaqus shell+beam 644

28 SUSI, Studies of liquid spreading in impact 20 wet IMPACT tests have been carried out and analyzed in the test campaign Liquid spreading and its effect on impact loads have been studied using different missiles and targets

29 STUDY OF LIQUID DISPERSAL OBJECTIVES Liquid dispersal is studied in order to: Support IMPACT-tests with respect to liquid-filled missiles. Measure, analyze and document the liquid dispersal during the IMPACT-tests. Choose and validate a numerical simulation tool for the simulation on liquid dispersal and, ultimately, fires resulting from aircraft impact.

30 STUDY OF LIQUID DISPERSAL STATUS 20 wet IMPACT tests have been analyzed: 16 tests with cylindrical missiles 4 tests with 3D missiles Water mass kg Impact velocity m/s Impact against either steel plate or concrete wall Numerical simulations have been performed using Fire Dynamics Simulator software.

31 STUDY OF LIQUID DISPERSAL MAIN RESULTS FROM THE CYLINDRICAL MISSILES Liquid dispersal takes place mainly in the direction of wall tangent. Spreading angle about 0 10 from wall tangent. Direction is symmetrical. Initial speed of liquid is even 2.5 times the impact speed. The stable size of the droplets is small, and they slow down soon after the impact. Measurement from oil-coated plates on the floor shows arithmetic mean diameter of µm.

32 STUDY OF LIQUID DISPERSAL MAIN RESULTS FROM THE 3D MISSILES Very asymmetric spreading. Effects of the missile geometry and structure are strong. Due to the wings, the vertical directions are more pronounced than horizontal. Spreading speed difficult to measure using the current methods that are based on cameras. Droplet sizes difficult to measure.

33 STUDY OF LIQUID DISPERSAL EXAMPLE OF RESULTS Droplet size distribution 0,3 Number fraction [-] 0,25 0,2 0,15 0,1 0, m/s, 3.5 m 105 m/s, 5.5 m 165 m/s, 3.5 m 165 m/s, 5.5 m 125 m/s, 3.7 m 125 m/s, 4.1 m 125 m/s, 5.1 m 125 m/s, 5.3 m 0 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 Size [mm]

34 STUDY OF LIQUID DISPERSAL NUMERICAL SIMULATIONS Fire Dynamics Simulator (FDS) Most widely used fire simulation software in the world. Based on CFD using Large Eddy Simulation (LES). Focus on the two-phase flow simulation Using Eulerian-Lagrangian method of droplet tracking For example: droplet trajectory is solved from ODE

35 STUDY OF LIQUID DISPERSAL VALIDATION OF NUMERICAL SIMULATIONS Velocity ratio V/Vi [-] V impact = 125 m/s, V i,w ater = 250 m/s, m w ater = 37 kg Exp. 0 (up) Exp. 45 Exp. 90 Exp. 135 FDS5 FL=1000, drag red. FDS5 dm=300 FL= Distance from missile [m] Validations on two scales Simulations of industrial nozzles Simulations of IMPACT tests Challenges High speed friction correlations numerical accuracy secondary breakups Drop-drop interactions Boundary conditions Direction Speed Size distribution

36 STUDY OF LIQUID DISPERSAL FEASIBILITY STUDY OF NUMERICAL SIMULATIONS Impact speed 125 m/s 37 l (25 kg) heptane C 7 H 16 Liquid speed 250 m/s Release time 10 s Release angle deg Mean diameter 300 m fluid cells Simulation time 15 s. Computation time 9.2 CPU h

37 IMPACT, Conclusions of experimental tests Impact facility is developed from year 2003, and has reached now mature status Capability of testing with various missiles and targets Repeatable tests can be carried out Most important measurements are the impact forces and target wall deformations First phase of the international test campaign is completed

38 SUSI, Conclusions of numerical simulations Simplified analytical methods and more detailed numerical models give consistent results and are in agreement with test results Calculation models predict displacements and rebar strains well The predicted frequency of elastic vibration after the first peak deflection is higher that that found in experiments The whole test setup needs to be modelled for more accurate predictions due to dynamic interactions of target and support structure Shell models are capable for predicting deflection due to soft missile impacts Material parameters for nonlinear concrete models need to be determined carefully 3D elements are needed for modelling local behaviour due to hard missile impact

39 SUSI, STUDY OF LIQUID DISPERSAL SUMMARY IMPACT-tests have provided useful and new information on the spreading of liquid from a high-speed impact. Numerical simulations need experimental information for validation specification of boundary conditions. The spray spreading simulations with FDS-program have been validated.

40 VTT creates business from technology

CHAPTER 4 4 NUMERICAL ANALYSIS

CHAPTER 4 4 NUMERICAL ANALYSIS 41 CHAPTER 4 4 NUMERICAL ANALYSIS Simulation is a powerful tool that engineers use to predict the result of a phenomenon or to simulate the working situation in which a part or machine will perform in

More information

Numerical modelling of shear connection between concrete slab and sheeting deck

Numerical modelling of shear connection between concrete slab and sheeting deck 7th fib International PhD Symposium in Civil Engineering 2008 September 10-13, Universität Stuttgart, Germany Numerical modelling of shear connection between concrete slab and sheeting deck Noémi Seres

More information

METHOD OF STATEMENT FOR STATIC LOADING TEST

METHOD OF STATEMENT FOR STATIC LOADING TEST Compression Test, METHOD OF STATEMENT FOR STATIC LOADING TEST Tension Test and Lateral Test According to the American Standards ASTM D1143 07, ASTM D3689 07, ASTM D3966 07 and Euro Codes EC7 Table of Contents

More information

METHODS FOR ACHIEVEMENT UNIFORM STRESSES DISTRIBUTION UNDER THE FOUNDATION

METHODS FOR ACHIEVEMENT UNIFORM STRESSES DISTRIBUTION UNDER THE FOUNDATION International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 2, March-April 2016, pp. 45-66, Article ID: IJCIET_07_02_004 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=2

More information

Fluid structure interaction of a vibrating circular plate in a bounded fluid volume: simulation and experiment

Fluid structure interaction of a vibrating circular plate in a bounded fluid volume: simulation and experiment Fluid Structure Interaction VI 3 Fluid structure interaction of a vibrating circular plate in a bounded fluid volume: simulation and experiment J. Hengstler & J. Dual Department of Mechanical and Process

More information

CRASH ANALYSIS OF AN IMPACT ATTENUATOR FOR RACING CAR IN SANDWICH MATERIAL

CRASH ANALYSIS OF AN IMPACT ATTENUATOR FOR RACING CAR IN SANDWICH MATERIAL F2008-SC-016 CRASH ANALYSIS OF AN IMPACT ATTENUATOR FOR RACING CAR IN SANDWICH MATERIAL Boria, Simonetta *, Forasassi, Giuseppe Department of Mechanical, Nuclear and Production Engineering, University

More information

Analysis and Repair of an Earthquake-Damaged High-rise Building in Santiago, Chile

Analysis and Repair of an Earthquake-Damaged High-rise Building in Santiago, Chile Analysis and Repair of an Earthquake-Damaged High-rise Building in Santiago, Chile J. Sherstobitoff Ausenco Sandwell, Vancouver, Canada P. Cajiao AMEC, Vancouver, Canada P. Adebar University of British

More information

Rock Bolt Condition Monitoring Using Ultrasonic Guided Waves

Rock Bolt Condition Monitoring Using Ultrasonic Guided Waves Rock Bolt Condition Monitoring Using Ultrasonic Guided Waves Bennie Buys Department of Mechanical and Aeronautical Engineering University of Pretoria Introduction Rock Bolts and their associated problems

More information

RESEARCH PROJECTS. For more information about our research projects please contact us at: info@naisengineering.com

RESEARCH PROJECTS. For more information about our research projects please contact us at: info@naisengineering.com RESEARCH PROJECTS For more information about our research projects please contact us at: info@naisengineering.com Or visit our web site at: www.naisengineering.com 2 Setup of 1D Model for the Simulation

More information

Fluid Mechanics: Static s Kinematics Dynamics Fluid

Fluid Mechanics: Static s Kinematics Dynamics Fluid Fluid Mechanics: Fluid mechanics may be defined as that branch of engineering science that deals with the behavior of fluid under the condition of rest and motion Fluid mechanics may be divided into three

More information

SAFE A HEAD. Structural analysis and Finite Element simulation of an innovative ski helmet. Prof. Petrone Nicola Eng.

SAFE A HEAD. Structural analysis and Finite Element simulation of an innovative ski helmet. Prof. Petrone Nicola Eng. SAFE A HEAD Structural analysis and Finite Element simulation of an innovative ski helmet Prof. Petrone Nicola Eng. Cherubina Enrico Goal Development of an innovative ski helmet on the basis of analyses

More information

THE USE OF AIR ATOMIZING NOZZLES TO PRODUCE SPRAYS WITH FINE DROPLETS

THE USE OF AIR ATOMIZING NOZZLES TO PRODUCE SPRAYS WITH FINE DROPLETS 14th International Water Mist Conference THE USE OF AIR ATOMIZING NOZZLES TO PRODUCE SPRAYS WITH FINE DROPLETS Dr.Gökhan BALIK Etik Muhendislik Danismanlik Tasarim ve Egitim Hizmetleri Ltd.Şti. Istanbul

More information

METHOD STATEMENT HIGH STRIAN DYNAMIC TESTING OF PILE. Prepared by

METHOD STATEMENT HIGH STRIAN DYNAMIC TESTING OF PILE. Prepared by METHOD STATEMENT HIGH STRIAN DYNAMIC TESTING OF PILE Prepared by Infratech ASTM CO., LTD. Contents Chapter Description Page Contents...... 1 List of Appendix. 1 1. Introduction.. 2 2. Test Method..2 3.

More information

SEISMIC RETROFITTING TECHNIQUE USING CARBON FIBERS FOR REINFORCED CONCRETE BUILDINGS

SEISMIC RETROFITTING TECHNIQUE USING CARBON FIBERS FOR REINFORCED CONCRETE BUILDINGS Fracture Mechanics of Concrete Structures Proceedings FRAMCOS-3 AEDIFICA TIO Publishers, D-79104 Freiburg, Germany SEISMIC RETROFITTING TECHNIQUE USING CARBON FIBERS FOR REINFORCED CONCRETE BUILDINGS H.

More information

MASTER DEGREE PROJECT

MASTER DEGREE PROJECT MASTER DEGREE PROJECT Finite Element Analysis of a Washing Machine Cylinder Thesis in Applied Mechanics one year Master Degree Program Performed : Spring term, 2010 Level Author Supervisor s Examiner :

More information

ANALYSIS OF A LAP JOINT FRICTION CONNECTION USING HIGH STRENGTH BOLTS

ANALYSIS OF A LAP JOINT FRICTION CONNECTION USING HIGH STRENGTH BOLTS Nordic Steel Construction Conference 212 Hotel Bristol, Oslo, Norway 5-7 September 212 ANALYSIS OF A LAP JOINT FRICTION CONNECTION USING HIGH STRENGTH BOLTS Marouene Limam a, Christine Heistermann a and

More information

SUPPLEMENTAL TECHNICAL SPECIFICATIONS BI-DIRECTIONAL STATIC LOAD TESTING OF DRILLED SHAFTS

SUPPLEMENTAL TECHNICAL SPECIFICATIONS BI-DIRECTIONAL STATIC LOAD TESTING OF DRILLED SHAFTS July 14, 2015 1.0 GENERAL BI-DIRECTIONAL STATIC LOAD TESTING OF DRILLED SHAFTS This work shall consist of furnishing all materials, equipment, labor, and incidentals necessary for conducting bi-directional

More information

FOUNDATION DESIGN. Instructional Materials Complementing FEMA 451, Design Examples

FOUNDATION DESIGN. Instructional Materials Complementing FEMA 451, Design Examples FOUNDATION DESIGN Proportioning elements for: Transfer of seismic forces Strength and stiffness Shallow and deep foundations Elastic and plastic analysis Foundation Design 14-1 Load Path and Transfer to

More information

June 2007 CHAPTER 7 - CULVERTS 7.0 CHAPTER 7 - CULVERTS 7.1 GENERAL

June 2007 CHAPTER 7 - CULVERTS 7.0 CHAPTER 7 - CULVERTS 7.1 GENERAL 7.0 7.1 GENERAL For the purpose of this manual, culverts are defined as structures that are completely surrounded by soil and located below the surface of the roadway parallel to the general direction

More information

DEVELOPMENT AND APPLICATIONS OF TUNED/HYBRID MASS DAMPERS USING MULTI-STAGE RUBBER BEARINGS FOR VIBRATION CONTROL OF STRUCTURES

DEVELOPMENT AND APPLICATIONS OF TUNED/HYBRID MASS DAMPERS USING MULTI-STAGE RUBBER BEARINGS FOR VIBRATION CONTROL OF STRUCTURES 13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 2243 DEVELOPMENT AND APPLICATIONS OF TUNED/HYBRID MASS DAMPERS USING MULTI-STAGE RUBBER BEARINGS FOR

More information

Optimising plate girder design

Optimising plate girder design Optimising plate girder design NSCC29 R. Abspoel 1 1 Division of structural engineering, Delft University of Technology, Delft, The Netherlands ABSTRACT: In the design of steel plate girders a high degree

More information

Monitoring of Tunnel End Plug Performance in ONKALO

Monitoring of Tunnel End Plug Performance in ONKALO Monitoring of Tunnel End Plug Performance in ONKALO Erika Holt, VTT Technical Research Centre of Finland Presentation at IGDTP-Geodisposal 2014 Manchester, UK, 24th to 26th of June 2014 Co-authors: I.

More information

The elements used in commercial codes can be classified in two basic categories:

The elements used in commercial codes can be classified in two basic categories: CHAPTER 3 Truss Element 3.1 Introduction The single most important concept in understanding FEA, is the basic understanding of various finite elements that we employ in an analysis. Elements are used for

More information

Precision Miniature Load Cell. Models 8431, 8432 with Overload Protection

Precision Miniature Load Cell. Models 8431, 8432 with Overload Protection w Technical Product Information Precision Miniature Load Cell with Overload Protection 1. Introduction The load cells in the model 8431 and 8432 series are primarily designed for the measurement of force

More information

Strip Flatness Prediction in a 4 High Tandem Mill Using a Dynamic Model.

Strip Flatness Prediction in a 4 High Tandem Mill Using a Dynamic Model. Strip Flatness Prediction in a 4 High Tandem Mill Using a Dynamic Model. M. A. Bello-Gomez 1, M. P. Guerrero-Mata 1, L. A. Leduc Lezama 1, T. P. Berber- Solano 1, L. Nieves 2, F. Gonzalez 2, H. R. Siller

More information

bi directional loading). Prototype ten story

bi directional loading). Prototype ten story NEESR SG: Behavior, Analysis and Design of Complex Wall Systems The laboratory testing presented here was conducted as part of a larger effort that employed laboratory testing and numerical simulation

More information

Practice Problems on Boundary Layers. Answer(s): D = 107 N D = 152 N. C. Wassgren, Purdue University Page 1 of 17 Last Updated: 2010 Nov 22

Practice Problems on Boundary Layers. Answer(s): D = 107 N D = 152 N. C. Wassgren, Purdue University Page 1 of 17 Last Updated: 2010 Nov 22 BL_01 A thin flat plate 55 by 110 cm is immersed in a 6 m/s stream of SAE 10 oil at 20 C. Compute the total skin friction drag if the stream is parallel to (a) the long side and (b) the short side. D =

More information

ANALYSIS OF GASKETED FLANGES WITH ORDINARY ELEMENTS USING APDL CONTROL

ANALYSIS OF GASKETED FLANGES WITH ORDINARY ELEMENTS USING APDL CONTROL ANALYSIS OF GASKETED FLANGES WITH ORDINARY ELEMENTS USING AP... Page 1 of 19 ANALYSIS OF GASKETED FLANGES WITH ORDINARY ELEMENTS USING APDL CONTROL Yasumasa Shoji, Satoshi Nagata, Toyo Engineering Corporation,

More information

Simulation for the Collapse of WTC after Aeroplane Impact

Simulation for the Collapse of WTC after Aeroplane Impact Simulation for the Collapse of WTC after Aeroplane Impact LU Xinzheng & JIANG Jianjing Department of Civil Engineering, Tsinghua University, Beijing, 100084 Abstract: Mechanical simulation and parameter

More information

COMPUTATIONAL ENGINEERING OF FINITE ELEMENT MODELLING FOR AUTOMOTIVE APPLICATION USING ABAQUS

COMPUTATIONAL ENGINEERING OF FINITE ELEMENT MODELLING FOR AUTOMOTIVE APPLICATION USING ABAQUS International Journal of Advanced Research in Engineering and Technology (IJARET) Volume 7, Issue 2, March-April 2016, pp. 30 52, Article ID: IJARET_07_02_004 Available online at http://www.iaeme.com/ijaret/issues.asp?jtype=ijaret&vtype=7&itype=2

More information

(Seattle is home of Boeing Jets)

(Seattle is home of Boeing Jets) Dr. Faeq M. Shaikh Seattle, Washington, USA (Seattle is home of Boeing Jets) 1 Pre Requisites for Today s Seminar Basic understanding of Finite Element Analysis Working Knowledge of Laminate Plate Theory

More information

Flow Assurance & Operability

Flow Assurance & Operability Flow Assurance & Operability Erosion due to sand production Date Business Name Overview 1. What causes erosion? 2. Sand production and transport 3. Sand management 4. Instrumentation / monitoring of sand

More information

Low Strain Rate Testing Based on Weight Drop Impact Tester

Low Strain Rate Testing Based on Weight Drop Impact Tester Proceedings of the SEM Annual Conference June 1-4, 2009 Albuquerque New Mexico USA 2009 Society for Experimental Mechanics Inc. Low Strain Rate Testing Based on Weight Drop Impact Tester Guojing Li and

More information

GOM Optical Measuring Techniques. Deformation Systems and Applications

GOM Optical Measuring Techniques. Deformation Systems and Applications GOM Optical Measuring Techniques Deformation Systems and Applications ARGUS Forming Analysis ARGUS Deformation analysis in sheet metal and forming industry Forming Characteristics of Sheet Metals Material

More information

Plates and Shells: Theory and Computation - 4D9 - Dr Fehmi Cirak (fc286@) Office: Inglis building mezzanine level (INO 31)

Plates and Shells: Theory and Computation - 4D9 - Dr Fehmi Cirak (fc286@) Office: Inglis building mezzanine level (INO 31) Plates and Shells: Theory and Computation - 4D9 - Dr Fehmi Cirak (fc286@) Office: Inglis building mezzanine level (INO 31) Outline -1-! This part of the module consists of seven lectures and will focus

More information

CHAPTER 9 LONG TERM MONITORING AT THE ROUTE 351 BRIDGE

CHAPTER 9 LONG TERM MONITORING AT THE ROUTE 351 BRIDGE CHAPTER 9 LONG TERM MONITORING AT THE ROUTE 351 BRIDGE 9.1 INTRODUCTION An important reason that composite piles have not gained wide acceptance in the civil engineering practice is the lack of a long

More information

Fluids and Solids: Fundamentals

Fluids and Solids: Fundamentals Fluids and Solids: Fundamentals We normally recognize three states of matter: solid; liquid and gas. However, liquid and gas are both fluids: in contrast to solids they lack the ability to resist deformation.

More information

INJECTION MOLDING COOLING TIME REDUCTION AND THERMAL STRESS ANALYSIS

INJECTION MOLDING COOLING TIME REDUCTION AND THERMAL STRESS ANALYSIS INJECTION MOLDING COOLING TIME REDUCTION AND THERMAL STRESS ANALYSIS Tom Kimerling University of Massachusetts, Amherst MIE 605 Finite Element Analysis Spring 2002 ABSTRACT A FEA transient thermal structural

More information

SAMPLE GUIDE SPECIFICATIONS FOR OSTERBERG CELL LOAD TESTING OF DEEP FOUNDATIONS

SAMPLE GUIDE SPECIFICATIONS FOR OSTERBERG CELL LOAD TESTING OF DEEP FOUNDATIONS Page 1 of 9 SAMPLE GUIDE SPECIFICATIONS FOR OSTERBERG CELL LOAD TESTING OF DEEP FOUNDATIONS 1. GENERAL REQUIREMENTS 1. Description of Work: This work consists of furnishing all materials, equipment and

More information

Chapter 5 Bridge Deck Slabs. Bridge Engineering 1

Chapter 5 Bridge Deck Slabs. Bridge Engineering 1 Chapter 5 Bridge Deck Slabs Bridge Engineering 1 Basic types of bridge decks In-situ reinforced concrete deck- (most common type) Pre-cast concrete deck (minimize the use of local labor) Open steel grid

More information

Structural Integrity Analysis

Structural Integrity Analysis Structural Integrity Analysis 1. STRESS CONCENTRATION Igor Kokcharov 1.1 STRESSES AND CONCENTRATORS 1.1.1 Stress An applied external force F causes inner forces in the carrying structure. Inner forces

More information

FLUID MECHANICS. TUTORIAL No.7 FLUID FORCES. When you have completed this tutorial you should be able to. Solve forces due to pressure difference.

FLUID MECHANICS. TUTORIAL No.7 FLUID FORCES. When you have completed this tutorial you should be able to. Solve forces due to pressure difference. FLUID MECHANICS TUTORIAL No.7 FLUID FORCES When you have completed this tutorial you should be able to Solve forces due to pressure difference. Solve problems due to momentum changes. Solve problems involving

More information

Dispersion diagrams of a water-loaded cylindrical shell obtained from the structural and acoustic responses of the sensor array along the shell

Dispersion diagrams of a water-loaded cylindrical shell obtained from the structural and acoustic responses of the sensor array along the shell Dispersion diagrams of a water-loaded cylindrical shell obtained from the structural and acoustic responses of the sensor array along the shell B.K. Jung ; J. Ryue ; C.S. Hong 3 ; W.B. Jeong ; K.K. Shin

More information

Ultrasonic Technique and Device for Residual Stress Measurement

Ultrasonic Technique and Device for Residual Stress Measurement Ultrasonic Technique and Device for Residual Stress Measurement Y. Kudryavtsev, J. Kleiman Integrity Testing Laboratory Inc. 80 Esna Park Drive, Units 7-9, Markham, Ontario, L3R 2R7 Canada ykudryavtsev@itlinc.com

More information

ADVANCED SYSTEMS FOR RATIONAL SLAB REINFORCEMENT

ADVANCED SYSTEMS FOR RATIONAL SLAB REINFORCEMENT ADVANCED SYSTEMS FOR RATIONAL SLAB REINFORCEMENT CASPER ÅLANDER M. Sc. (Civ. Eng.) Development manager Fundia Reinforcing Abstract This paper deals with rational and fast ways to reinforce concrete slabs.

More information

Draft Table of Contents. Building Code Requirements for Structural Concrete and Commentary ACI 318-14

Draft Table of Contents. Building Code Requirements for Structural Concrete and Commentary ACI 318-14 Draft Table of Contents Building Code Requirements for Structural Concrete and Commentary ACI 318-14 BUILDING CODE REQUIREMENTS FOR STRUCTURAL CONCRETE (ACI 318 14) Chapter 1 General 1.1 Scope of ACI 318

More information

Step 11 Static Load Testing

Step 11 Static Load Testing Step 11 Static Load Testing Test loading is the most definitive method of determining load capacity of a pile. Testing a pile to failure provides valuable information to the design engineer and is recommended

More information

In-situ Load Testing to Evaluate New Repair Techniques

In-situ Load Testing to Evaluate New Repair Techniques In-situ Load Testing to Evaluate New Repair Techniques W.J. Gold 1 and A. Nanni 2 1 Assistant Research Engineer, Univ. of Missouri Rolla, Dept. of Civil Engineering 2 V&M Jones Professor, Univ. of Missouri

More information

Weight Measurement Technology

Weight Measurement Technology Kistler-Morse (KM) introduced bolt-on weight measuring systems three decades ago. These devices featured Walter Kistler s invention, the Microcell. Over the years, many improvements were made to the Microcell

More information

DEVELOPMENT OF A NEW TEST FOR DETERMINATION OF TENSILE STRENGTH OF CONCRETE BLOCKS

DEVELOPMENT OF A NEW TEST FOR DETERMINATION OF TENSILE STRENGTH OF CONCRETE BLOCKS 1 th Canadian Masonry Symposium Vancouver, British Columbia, June -5, 013 DEVELOPMENT OF A NEW TEST FOR DETERMINATION OF TENSILE STRENGTH OF CONCRETE BLOCKS Vladimir G. Haach 1, Graça Vasconcelos and Paulo

More information

Damage Evaluation of 500 MWe Indian Pressurized Heavy Water Reactor Nuclear Containment for Air Craft Impact

Damage Evaluation of 500 MWe Indian Pressurized Heavy Water Reactor Nuclear Containment for Air Craft Impact Transactions of the 17 th International Conference on Structural Mechanics in Reactor Technology (SMiRT 17) Prague, Czech Republic, August 17 22, 23 Paper # J3-2 Damage Evaluation of 5 MWe Indian Pressurized

More information

SLAB DESIGN. Introduction ACI318 Code provides two design procedures for slab systems:

SLAB DESIGN. Introduction ACI318 Code provides two design procedures for slab systems: Reading Assignment SLAB DESIGN Chapter 9 of Text and, Chapter 13 of ACI318-02 Introduction ACI318 Code provides two design procedures for slab systems: 13.6.1 Direct Design Method (DDM) For slab systems

More information

DESIGN AND ANALYSIS OF BRIDGE WITH TWO ENDS FIXED ON VERTICAL WALL USING FINITE ELEMENT ANALYSIS

DESIGN AND ANALYSIS OF BRIDGE WITH TWO ENDS FIXED ON VERTICAL WALL USING FINITE ELEMENT ANALYSIS International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 2, March-April 2016, pp. 34-44, Article ID: IJCIET_07_02_003 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=2

More information

ANALYSIS FOR BEHAVIOR AND ULTIMATE STRENGTH OF CONCRETE CORBELS WITH HYBRID REINFORCEMENT

ANALYSIS FOR BEHAVIOR AND ULTIMATE STRENGTH OF CONCRETE CORBELS WITH HYBRID REINFORCEMENT International Journal of Civil Engineering and Technology (IJCIET) Volume 6, Issue 10, Oct 2015, pp. 25-35 Article ID: IJCIET_06_10_003 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=6&itype=10

More information

1.054/1.541 Mechanics and Design of Concrete Structures (3-0-9) Outline 1 Introduction / Design Criteria for Reinforced Concrete Structures

1.054/1.541 Mechanics and Design of Concrete Structures (3-0-9) Outline 1 Introduction / Design Criteria for Reinforced Concrete Structures Prof. Oral Buyukozturk Massachusetts Institute of Technology Outline 1 1.054/1.541 Mechanics and Design of Concrete Structures (3-0-9) Outline 1 Introduction / Design Criteria for Reinforced Concrete Structures

More information

Modeling Beams on Elastic Foundations Using Plate Elements in Finite Element Method

Modeling Beams on Elastic Foundations Using Plate Elements in Finite Element Method Modeling Beams on Elastic Foundations Using Plate Elements in Finite Element Method Yun-gang Zhan School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang,

More information

Estimation of shear force for blind shear ram blowout preventers

Estimation of shear force for blind shear ram blowout preventers Estimation of shear force for blind shear ram blowout preventers Abdulkadir Tekin *, Changhyok Choi, Taylan Altan, Hamit Adin Online Publication Date: 17 Feb 2015 URL: http://www.jresm.org/archive/resm2014.02st1225.html

More information

Validation of Cable Bolt Support Design in Weak Rock Using SMART Instruments and Phase 2

Validation of Cable Bolt Support Design in Weak Rock Using SMART Instruments and Phase 2 Validation of Cable Bolt Support Design in Weak Rock Using SMART Instruments and Phase 2 W.F. Bawden, Chair Lassonde Mineral Engineering Program, U. of Toronto, Canada J.D. Tod, Senior Engineer, Mine Design

More information

Customer Training Material. Lecture 4. Meshing in Mechanical. Mechanical. ANSYS, Inc. Proprietary 2010 ANSYS, Inc. All rights reserved.

Customer Training Material. Lecture 4. Meshing in Mechanical. Mechanical. ANSYS, Inc. Proprietary 2010 ANSYS, Inc. All rights reserved. Lecture 4 Meshing in Mechanical Introduction to ANSYS Mechanical L4-1 Chapter Overview In this chapter controlling meshing operations is described. Topics: A. Global Meshing Controls B. Local Meshing Controls

More information

REPAIR AND STRENGTHENING OF HISTORICAL CONCRETE BRIDGE OVER VENTA RIVER IN LATVIA

REPAIR AND STRENGTHENING OF HISTORICAL CONCRETE BRIDGE OVER VENTA RIVER IN LATVIA 1 REPAIR AND STRENGTHENING OF HISTORICAL CONCRETE BRIDGE OVER VENTA RIVER IN LATVIA Verners Straupe, M.sc.eng., Rudolfs Gruberts, dipl. eng. JS Celuprojekts, Murjanu St. 7a, Riga, LV 1024, Latvia e-mail:

More information

Bearing strength of stainless steel bolted plates in tension

Bearing strength of stainless steel bolted plates in tension NSCC29 Bearing strength of stainless steel bolted plates in tension G. KIYMAZ 1 1 Department of Civil Engineering, Istanbul Kultur University, Ataköy Campus, Bakırköy, Istanbul, Turkey ABSTRACT: A study

More information

Numerical Analysis of Independent Wire Strand Core (IWSC) Wire Rope

Numerical Analysis of Independent Wire Strand Core (IWSC) Wire Rope Numerical Analysis of Independent Wire Strand Core (IWSC) Wire Rope Rakesh Sidharthan 1 Gnanavel B K 2 Assistant professor Mechanical, Department Professor, Mechanical Department, Gojan engineering college,

More information

Lymon C. Reese & Associates LCR&A Consulting Services Tests of Piles Under Axial Load

Lymon C. Reese & Associates LCR&A Consulting Services Tests of Piles Under Axial Load Lymon C. Reese & Associates LCR&A Consulting Services Tests of Piles Under Axial Load Nature of Services The company has a long history of performance of tests of piles and pile groups under a variety

More information

ANALYTICAL AND EXPERIMENTAL EVALUATION OF SPRING BACK EFFECTS IN A TYPICAL COLD ROLLED SHEET

ANALYTICAL AND EXPERIMENTAL EVALUATION OF SPRING BACK EFFECTS IN A TYPICAL COLD ROLLED SHEET International Journal of Mechanical Engineering and Technology (IJMET) Volume 7, Issue 1, Jan-Feb 2016, pp. 119-130, Article ID: IJMET_07_01_013 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=7&itype=1

More information

SIESMIC SLOSHING IN CYLINDRICAL TANKS WITH FLEXIBLE BAFFLES

SIESMIC SLOSHING IN CYLINDRICAL TANKS WITH FLEXIBLE BAFFLES SIESMIC SLOSHING IN CYLINDRICAL TANKS WITH FLEXIBLE BAFFLES Kayahan AKGUL 1, Yasin M. FAHJAN 2, Zuhal OZDEMIR 3 and Mhamed SOULI 4 ABSTRACT Sloshing has been one of the major concerns for engineers in

More information

SEISMIC DESIGN. Various building codes consider the following categories for the analysis and design for earthquake loading:

SEISMIC DESIGN. Various building codes consider the following categories for the analysis and design for earthquake loading: SEISMIC DESIGN Various building codes consider the following categories for the analysis and design for earthquake loading: 1. Seismic Performance Category (SPC), varies from A to E, depending on how the

More information

Technical Notes 3B - Brick Masonry Section Properties May 1993

Technical Notes 3B - Brick Masonry Section Properties May 1993 Technical Notes 3B - Brick Masonry Section Properties May 1993 Abstract: This Technical Notes is a design aid for the Building Code Requirements for Masonry Structures (ACI 530/ASCE 5/TMS 402-92) and Specifications

More information

Figure 5-11. Test set-up

Figure 5-11. Test set-up 5.5. Load Procedure A uniform load configuration was used for the load tests. An air bag, placed on the top surface of the slab, was used for this purpose, and the load was applied by gradually increasing

More information

Liner system design for tailings impoundments and heap leach pads

Liner system design for tailings impoundments and heap leach pads Liner system design for tailings impoundments and heap leach pads John F. Lupo, Ph.D., P.E. AMEC E&E TAILINGS & MINE WASTE 08, VAIL Liner Systems Liner systems Environmental containment of process solutions

More information

Measuring the Condition of Prestressed Concrete Cylinder Pipe

Measuring the Condition of Prestressed Concrete Cylinder Pipe Measuring the Condition of Prestressed Concrete Cylinder Pipe John Marshall, P.E.I, I J.W. Marshall and Associates, and Paul S. Fisk, President NDT Corporation Introduction Prestressed Concrete Cylinder

More information

Investigations of a Long-Distance 1000 MW Heat Transport System with APROS Simulation Software

Investigations of a Long-Distance 1000 MW Heat Transport System with APROS Simulation Software th International Conference on Structural Mechanics in Reactor Technology (SMiRT ) Espoo, Finland, August 9-4, 9 SMiRT -Division 3, Paper 56 Investigations of a Long-Distance MW Heat Transport System with

More information

Blast Resistant Building BP Refinery Rotterdam

Blast Resistant Building BP Refinery Rotterdam Blast Resistant Building BP Refinery Rotterdam 14 May, 2008 1 1 Contents Presentation Introduction KCI Functional Specification Blast Resistant Building Basis for design Blast & impact loading Design modeling

More information

CFD Simulation of HSDI Engine Combustion Using VECTIS

CFD Simulation of HSDI Engine Combustion Using VECTIS CFD Simulation of HSDI Engine Combustion Using VECTIS G. Li, S.M. Sapsford Ricardo Consulting Engineer s Ltd., Shoreham-by-Sea, UK ABSTRACT As part of the VECTIS code validation programme, CFD simulations

More information

Blast Proof Occupied Buildings

Blast Proof Occupied Buildings Blast Proof Occupied Buildings 1 1 Contents Presentation References Functional Specification Blast Resistant Building Basis for design Blast & impact loading Design modeling & analyses Preliminary design

More information

A Study of Durability Analysis Methodology for Engine Valve Considering Head Thermal Deformation and Dynamic Behavior

A Study of Durability Analysis Methodology for Engine Valve Considering Head Thermal Deformation and Dynamic Behavior A Study of Durability Analysis Methodology for Engine Valve Considering Head Thermal Deformation and Dynamic Behavior Kum-Chul, Oh 1, Sang-Woo Cha 1 and Ji-Ho Kim 1 1 R&D Center, Hyundai Motor Company

More information

Finite Element Method (ENGC 6321) Syllabus. Second Semester 2013-2014

Finite Element Method (ENGC 6321) Syllabus. Second Semester 2013-2014 Finite Element Method Finite Element Method (ENGC 6321) Syllabus Second Semester 2013-2014 Objectives Understand the basic theory of the FEM Know the behaviour and usage of each type of elements covered

More information

ETABS. Integrated Building Design Software. Concrete Shear Wall Design Manual. Computers and Structures, Inc. Berkeley, California, USA

ETABS. Integrated Building Design Software. Concrete Shear Wall Design Manual. Computers and Structures, Inc. Berkeley, California, USA ETABS Integrated Building Design Software Concrete Shear Wall Design Manual Computers and Structures, Inc. Berkeley, California, USA Version 8 January 2002 Copyright The computer program ETABS and all

More information

EFFECT OF GEOGRID REINFORCEMENT ON LOAD CARRYING CAPACITY OF A COARSE SAND BED

EFFECT OF GEOGRID REINFORCEMENT ON LOAD CARRYING CAPACITY OF A COARSE SAND BED International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 3, May June 2016, pp. 01 06, Article ID: IJCIET_07_03_001 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=3

More information

Optimum proportions for the design of suspension bridge

Optimum proportions for the design of suspension bridge Journal of Civil Engineering (IEB), 34 (1) (26) 1-14 Optimum proportions for the design of suspension bridge Tanvir Manzur and Alamgir Habib Department of Civil Engineering Bangladesh University of Engineering

More information

NUMERICAL ANALYSIS OF THE EFFECTS OF WIND ON BUILDING STRUCTURES

NUMERICAL ANALYSIS OF THE EFFECTS OF WIND ON BUILDING STRUCTURES Vol. XX 2012 No. 4 28 34 J. ŠIMIČEK O. HUBOVÁ NUMERICAL ANALYSIS OF THE EFFECTS OF WIND ON BUILDING STRUCTURES Jozef ŠIMIČEK email: jozef.simicek@stuba.sk Research field: Statics and Dynamics Fluids mechanics

More information

REHABILITATION OF THE FIGUEIRA DA FOZ BRIDGE

REHABILITATION OF THE FIGUEIRA DA FOZ BRIDGE REHABILITATION OF THE FIGUEIRA DA FOZ BRIDGE A.Rito Proponte, Lda, Lisbon, Portugal J. Appleton A2P Consult, Lda, Lisbon, Portugal ABSTRACT: The Figueira da Foz Bridge includes a 405 m long cable stayed

More information

Mixing in the process industry: Chemicals Food Pharmaceuticals Paper Polymers Minerals Environmental. Chemical Industry:

Mixing in the process industry: Chemicals Food Pharmaceuticals Paper Polymers Minerals Environmental. Chemical Industry: Mixing Notes: Chapter 19 Robert P. Hesketh Mixing in the process industry: Chemicals Food Pharmaceuticals Paper Polymers Minerals Environmental Chemical Industry: Paints and Coatings Synthetic Rubbers

More information

NONLINEAR FINITE ELEMENT ANALYSIS FOR REINFORCED CONCRETE SLABS UNDER PUNCHING LOADS

NONLINEAR FINITE ELEMENT ANALYSIS FOR REINFORCED CONCRETE SLABS UNDER PUNCHING LOADS International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 3, May June 2016, pp. 392 397, Article ID: IJCIET_07_03_040 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=3

More information

Burst Pressure Prediction of Pressure Vessel using FEA

Burst Pressure Prediction of Pressure Vessel using FEA Burst Pressure Prediction of Pressure Vessel using FEA Nidhi Dwivedi, Research Scholar (G.E.C, Jabalpur, M.P), Veerendra Kumar Principal (G.E.C, Jabalpur, M.P) Abstract The main objective of this paper

More information

BAFFLES AS A MEANS OF STATION PROTECTION FROM HIGH AIR VELOCITIES - COMPARISON OF ANALYTICAL AND FIELD MEASUREMENTS RESULTS

BAFFLES AS A MEANS OF STATION PROTECTION FROM HIGH AIR VELOCITIES - COMPARISON OF ANALYTICAL AND FIELD MEASUREMENTS RESULTS - 289 - BAFFLES AS A MEANS OF STATION PROTECTION FROM HIGH AIR VELOCITIES - COMPARISON OF ANALYTICAL AND FIELD MEASUREMENTS RESULTS Maevski Igor, PhD, PE Jacobs Engineering, USA ABSTRACT Draught relief

More information

STRESS AND DEFORMATION ANALYSIS OF LINEAR ELASTIC BARS IN TENSION

STRESS AND DEFORMATION ANALYSIS OF LINEAR ELASTIC BARS IN TENSION Chapter 11 STRESS AND DEFORMATION ANALYSIS OF LINEAR ELASTIC BARS IN TENSION Figure 11.1: In Chapter10, the equilibrium, kinematic and constitutive equations for a general three-dimensional solid deformable

More information

Proceedings of OMAE'01 20 th International Conference on Offshore Mechanics and Arctic Engineering June 3-8, 2001, Rio de Janeiro, Brazil

Proceedings of OMAE'01 20 th International Conference on Offshore Mechanics and Arctic Engineering June 3-8, 2001, Rio de Janeiro, Brazil Proceedings of OMAE' 2 th International Conference on Offshore Mechanics and Arctic Engineering June 3-8, 2, Rio de Janeiro, Brazil OMAE2/SR-259 PROBABILISTIC MODELLING AND ANALYSIS OF RISER COLLISION

More information

Drained and Undrained Conditions. Undrained and Drained Shear Strength

Drained and Undrained Conditions. Undrained and Drained Shear Strength Drained and Undrained Conditions Undrained and Drained Shear Strength Lecture No. October, 00 Drained condition occurs when there is no change in pore water pressure due to external loading. In a drained

More information

INTERNATIONAL ASSOCIATION OF CLASSIFICATION SOCIETIES. Interpretations of the FTP

INTERNATIONAL ASSOCIATION OF CLASSIFICATION SOCIETIES. Interpretations of the FTP INTERNATIONAL ASSOCIATION OF CLASSIFICATION SOCIETIES Interpretations of the FTP CONTENTS FTP1 Adhesives used in A or B class divisions (FTP Code 3.1, Res A.754 para. 3.2.3) June 2000 FTP2 Pipe and duct

More information

Technical Report Example (1) Chartered (CEng) Membership

Technical Report Example (1) Chartered (CEng) Membership Technical Report Example (1) Chartered (CEng) Membership A TECHNICAL REPORT IN SUPPORT OF APPLICATION FOR CHARTERED MEMBERSHIP OF IGEM DESIGN OF 600 (103 BAR) 820MM SELF SEALING REPAIR CLAMP AND VERIFICATION

More information

Solution for Homework #1

Solution for Homework #1 Solution for Homework #1 Chapter 2: Multiple Choice Questions (2.5, 2.6, 2.8, 2.11) 2.5 Which of the following bond types are classified as primary bonds (more than one)? (a) covalent bonding, (b) hydrogen

More information

Vibration measurements on future supports of mirrors M3 and M4 (ver. 1.0)

Vibration measurements on future supports of mirrors M3 and M4 (ver. 1.0) Vibration measurements on future supports of mirrors M3 and M4 (ver. 1.0) Juan Peñalver, Santiago Navarro 5-June-2014 Abstract The 30m telescope uses a Nasmyth optics system to redirect the electromagnetic

More information

EFFECTS ON NUMBER OF CABLES FOR MODAL ANALYSIS OF CABLE-STAYED BRIDGES

EFFECTS ON NUMBER OF CABLES FOR MODAL ANALYSIS OF CABLE-STAYED BRIDGES EFFECTS ON NUMBER OF CABLES FOR MODAL ANALYSIS OF CABLE-STAYED BRIDGES Yang-Cheng Wang Associate Professor & Chairman Department of Civil Engineering Chinese Military Academy Feng-Shan 83000,Taiwan Republic

More information

EDUH 1017 - SPORTS MECHANICS

EDUH 1017 - SPORTS MECHANICS 4277(a) Semester 2, 2011 Page 1 of 9 THE UNIVERSITY OF SYDNEY EDUH 1017 - SPORTS MECHANICS NOVEMBER 2011 Time allowed: TWO Hours Total marks: 90 MARKS INSTRUCTIONS All questions are to be answered. Use

More information

Development of a Dropped Weight Impact Testing Machine

Development of a Dropped Weight Impact Testing Machine International Journal of Engineering & Technology IJET-IJENS Vol: 11 No: 06 120 Development of a Dropped Weight Impact Testing Machine Leonardo Gunawan, Tatacipta Dirgantara, and Ichsan Setya Putra Abstract

More information

Vibration mitigation for metro line on soft clay

Vibration mitigation for metro line on soft clay Bergen, Norway BNAM May - Vibration mitigation for metro line on soft clay Karin Norén-Cosgriff and Christian Madshus Norwegian Geotechnical Institute (NGI), Sognsveien 7, 7, NO-86 Oslo, Norway, kmr@ngi.no,

More information

Structural Failures Cost Lives and Time

Structural Failures Cost Lives and Time Structural Failures Cost Lives and Time Recent failures of storage bins, silos and other structures highlight the need to increase awareness of hazards associated with these structures. Since 2010, one

More information

New approaches in Eurocode 3 efficient global structural design

New approaches in Eurocode 3 efficient global structural design New approaches in Eurocode 3 efficient global structural design Part 1: 3D model based analysis using general beam-column FEM Ferenc Papp* and József Szalai ** * Associate Professor, Department of Structural

More information

A. Hyll and V. Horák * Department of Mechanical Engineering, Faculty of Military Technology, University of Defence, Brno, Czech Republic

A. Hyll and V. Horák * Department of Mechanical Engineering, Faculty of Military Technology, University of Defence, Brno, Czech Republic AiMT Advances in Military Technology Vol. 8, No. 1, June 2013 Aerodynamic Characteristics of Multi-Element Iced Airfoil CFD Simulation A. Hyll and V. Horák * Department of Mechanical Engineering, Faculty

More information

THE COMPOSITE DISC - A NEW JOINT FOR HIGH POWER DRIVESHAFTS

THE COMPOSITE DISC - A NEW JOINT FOR HIGH POWER DRIVESHAFTS THE COMPOSITE DISC - A NEW JOINT FOR HIGH POWER DRIVESHAFTS Dr Andrew Pollard Principal Engineer GKN Technology UK INTRODUCTION There is a wide choice of flexible couplings for power transmission applications,

More information