Finite Element Analysis of seawater intake hoses

Transcription

1 Finite Element Analysis of seawater intake hoses Danyi Antal, Domonkos Imre, Bétéri Gyula, Dr. Katona Tamás Simday 2012, Budapest

2 ContiTech Organisation Rubber Group Automotive Group Tires ContiTech Chassis & Safety Powertrain Interior Communications Controlling/ Finance Engineering Human Resources International Sales Organisation IT Quality & Environment R & D Materials Air Spring Systems Original Equipment Replacement Business Seats, Driver Cabs Railway Engineering Industrial Applications Benecke- Kaliko Group Automotive Sheeting Compounding Technology Conveyor Belt Group Mining Europe Mining World Industry Engineered Products Elastomer Coatings Printing Blankets Coated Fabrics Industrial Products Fluid Technology Fuel Supply & Exhaust Gas Management Heating/Cooling/ Turbocharger Power Train Power Steering/ Chassis Control Commercial and Industrial Vehicles Power Transmission Group Automotive Aftermarket Industry PU-Belts Vibration Control Air Conditioning Automotive OE Automotive Industry Sealing Systems Chassis Industrial Hoses Fuel Cells Oil & Marine Status 04/2012

3 Members of Oil & Marine Dunlop Oil & Marine Ltd Grimsby / Ashington UK Eddelbüttel + Schneider Hamburg Germany ContiTech Rubber Industrial Ltd Szeged Hungary ContiTech Beattie Corp. Houston USA ContiTech Oil & Marine Singapore

4 Flexible hoses for offshore application - rotary/cement - choke & kill - well test - BOP control - utility Supply hoses Crude oil offloading Production hoses Seawater Intake System Sub-sea production hoses

5 Floating low pressure oil hose in service

6 Production hose in service

7 Flexible hoses for offshore application - rotary/cement - choke & kill - well test - BOP control - utility Supply hoses Crude oil offloading Production hoses Seawater Intake System Sub-sea production hoses

8 8 Extreme size of dredge hose

9 9 Vessel model with seawater intake hose lines

10 10 Needed to answer by modeling Check the minimal bend radii in case of 100 year weather conditions Define the utilization of the structural parts Life time calculation The used tools Concentrate parametric modeling OrcaFlex software Distributed parametric modeling Marc Mentat softwares

11 11 Subtasks Bend stiffness Modeling of the bending test process to define the bend stiffness Vessel and hose motions Vessel main particulars (sizes, LCG-VCG, RAO, mooring sys.) and environmental conditions are given The hose motions are modeled and the reaction forces are post-processed Stress distribution Define the maximal stress values and utilization factors in the structural parts in case of extreme load cases Define the stress loading factors Fatigue life prediction Fatigue damage is cumulated using SLF, weather conditions and S-N curves

12 12 Subtasks solved by Marc Mentat Bend stiffness Modeling of the bending test process to define the bend stiffness Vessel and hose motions Vessel main particulars (sizes, LCG-VCG, RAO, mooring system) and environmental conditions are given The hose motions are modeled and the reaction forces are post-processed Stress distribution Define the maximal stress values and utilization factors in the structural parts in case of extreme load cases Define the stress loading factors (SLF) Fatigue life prediction Fatigue damage is cumulated using SLF, weather conditions and S-N curves

13 13 Subtasks solved by Marc Mentat Bend stiffness Modeling of the bending test process to define the bend stiffness

14 14 Typical SWU hose geometry

15 15 FEM model Axi-symmetric sequence

16 16 FEM model Axi-symmetric sequence

17 17 FEM model Rebar elements

18 18 FEM model Axi-symmetric element types

19 19 FEM model 3D hose model

20 20 FEM model 3D flange and bumper model

21 21 Bending test process based on GOMPHOM (OCIMF) standard Guide to Manufacturing and Purchasing Hoses for Offshore Mooring, 2009, Section 2, Ch.2.1.7

22 22 Bending test process based on GOMPHOM (OCIMF) standard Guide to Manufacturing and Purchasing Hoses for Offshore Mooring, 2009, Section 2, Ch.2.1.7

23 23 FEM model Boundary conditions

24 24 Results Deformed shape

25 25 Results Deformed shape

26 26 Curvature [1/m] IxE [knm2] Results Bend stiffness Curvature Bend stiffness hose body flange hose body flange bumper 250 bumper Iso-moment lines Bend moment [knm] Curvature [1/m]

27 27 IxE [kgm2] Validation Measured and simulated bend stiffness values Measured Simulated R k 3 Third power of mean radii [m 3 ]

28 28 Subtasks Vessel and hose motions Vessel main particulars (sizes, LCG-VCG, RAO, mooring system) and environmental conditions are given The hose motions are modeled and the reaction forces are post-processed

29 29 Vessel motions

30 30 Curvature along the hose length

31 31 Subtasks Stress distribution Define the maximal stress values and utilization factors in the structural parts in case of extreme load cases Define the stress loading factors (SLF)

32 32 Axi-symmetric FEM model of flange

33 33 Axi-symmetric FEM model of flange BC s

34 34 Results

35 35 Results

36 36 Results

37 37 Results Utilization of components Textile cord Rubber Vorplate Lamella Flange Ring

38 38 Results Stress Loading Factors Tension Bending Steel plate Lamella Flange Ring in neck Ring in bumper Ring in body

39 39 Subtasks Fatigue life prediction Fatigue damage is cumulated using SLF, weather conditions and S-N curves

40 40 Thank you for your attention