Anisotropic behaviour law for sheets used in stamping:: A comparative study of steel and aluminium |
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| Authors: | Jean-Jacques Sinou Bruno Macquaire |
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| Institution: | 1. École centrale de Lyon, Laboratoire de tribologie et dynamique des structures, batiment E6, 36, avenue Guy de Collongue, 69134 Ecully, France;2. RENAULT S.A., Manager BIW Advanced Design & New Materials, Technocentre Renault, 1, avenue du golf, 78288 Guyancourt cedex, France |
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| Abstract: | For a car manufacturer, reducing the weight of vehicles is an obvious aim. Replacing steel by aluminium moves towards that goal. Unfortunately, aluminium's stamping numerical simulation results are not yet as reliable as those of steel. Punch-strength and spring-back phenomena are not correctly described. This study on aluminium validates the behaviour law Hill 48 quadratic yield criterion with both isotropic and kinematic hardening. It is based on the yield surface and on associated experimental tests (uniaxial test, plane tensile test, plane compression and tensile shearing). To cite this article: J.-J. Sinou, B. Macquaire, C. R. Mecanique 331 (2003). |
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| Keywords: | Solids and structures Stamping of sheets Yield surface Mixed hardening Solides et structures Emboutissage des tôles Surface de charge Écrouissage mixte |
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