Jönköpings Tekniska Högskola
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1 Jönköpings Tekniska Högskola Virtuell Gjutning hur kan det användas i produkt- och produktionsutvecklingen? t kli Carl Loper symposium 2009 Svensson IL & Sjögren T Ingvar L Svensson Tekniska Högskolan i Jönköping, Material och Tillverkning - Gjutning 1 Innehåll Var finns gjutgods och hur gör man? Bakgrund, Tekniska Högskolan i Jönköping Gjutningsforskning Simulering av gjutning Några exempel 2 1
2 Where do we find castings? Gravity die casting Source: 2
3 Thematic areas / JTH Källa: Ingvar L Svensson 5 Staff at Materials and Manufacturing - Casting Team leaders Ingvar L Svensson Attila Diószegi Lennart Elmquist Salem Seifeddine Magnus Wessén Nils-Erik Andersson Patrik Cannmo Prof. Assoc. Prof. Assist. Prof. Assist.. Prof. Assist.. Prof. Assist.. Prof. Assist. Prof. Guest professors and researchers Laboratory staff Arne Dale Jesper Hattel Guest. Prof. Guest. Prof. Researchers Daniel Holmgren Assist.. Prof. Dan Larsson PhD-student Toni Bogdanoff Technician Lars Johansson Technician Märta Thor Technician Torsten Sjögren Post Doc Rikard Källbom Tekn. Lic. PhD-st. Martin Selin Tekn. Lic. PhD-st Diaonu_Lucian PhD- student Mathias König Johan Ekengård Fredrik Wilberfors PhD-student Tekn. Lic. PhD-st. PhD-student Ruben Lora PhD-student Jonas Lindquist Lab assist Svidro_peter Lab assist Jakob Olofsson PhD-student Haiping Cao Assist.. Prof. Emma Sjölander PhD-student Vacant PhD-student Vacant PhD-student Vacant PhD-student 6 3
4 Casting Innovation Centre (CIC) Industry + Up to 200 SME CIC International partners 7 International network and partners Major partner Network 8 4
5 Casting simulation Si Cu Fe Cu Ni Mg Mn Al Research route of Materials, manufacturing and Simulation of Casting Chemical Composition Experimental and modelling Optimal design Crash / LOAD Combining Microstructure and Mechanical lproperties Phasediagram calculation Mechanical properties Grain refinement Modification Solidification Heat treatment Microstructure Defect formation 5
6 Mould filling temperature Virtuella tillverkningsmetoder IVA 2009 Svensson IL 11 Soldification fraction liquid Virtuella tillverkningsmetoder IVA 2009 Svensson IL 12 6
7 Pearlite content distribution Simulation vs. experiment 13 Hardness distribution Simulation vs. experiment Experimentella resultat 14 7
8 Influence of alloy composition 2.69 % Si, % Cu 2.69 % Si, 0.7 % Cu 4.0 % Si, % Cu Pearlite content Brinell hardness 15 Influence of alloy composition 2.69 % Si, % Cu Min. Tensile Strength MPa 2.69 % Si, 0.7 % Cu MPa 4.0 % Si,, % Cu MPa 16 8
9 Casting Product Constrained on surface Pressure 11 MPa Mould filling Virtuella tillverkningsmetoder IVA 2009 Svensson IL 18 9
10 Solidification time, Alloy A354 HPDC Solidification rate Simulated Dendrite Arm Spacing 10
11 Stress Strain curve Elastic deformation (E, Hooks Law) Plastic deformation and deformation hardening Elastic-plastic stress-strain curve σ T K ) n = (ε pl Hollomon n σ = K ε + T 1 ε e 1 ( K 2 + n 2 ε ) Ludwigson 11
12 Ultimate tensile strength Ultimate tensile strength 12
13 Normal stress in vertical direction as a result of the crash load Local material data Local material data Comparison local and constant material data Mises stress as a result of the crash load. Constant material data 13
14 Thank you for your attention! 27 14
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