Anisotropic behaviour law for sheets used in stamping: A comparative study of steel and aluminium

Jean-Jacques Sinou (1) , Bruno Macquaire (2)

1 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes
2 Technocentre Renault [Guyancourt]

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).

Mots clés: Solids and structures; Stamping of sheets; Yield surface; Mixed hardening

Domaines: Matériaux et structures en mécanique [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]; Mécanique des solides [physics.class-ph]; Mécanique des solides [physics.class-ph]

Jean-Jacques Sinou, Bruno Macquaire. Anisotropic behaviour law for sheets used in stamping: A comparative study of steel and aluminium. Comptes Rendus Mécanique, 2003, 331 (1), pp.33-40. ⟨10.1016/S1631-0721(02)00019-0⟩. ⟨hal-00207620⟩