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Springback Simulation: Impact of Some Advanced Constitutive Models and Numerical Parameters

Communication avec acte
Author
ccHADDAG, Badis
1104 Laboratoire de physique et mécanique des matériaux [LPMM]
ccBALAN, Tudor
1104 Laboratoire de physique et mécanique des matériaux [LPMM]
ccABED-MERAIM, Farid
1104 Laboratoire de physique et mécanique des matériaux [LPMM]

URI
http://hdl.handle.net/10985/26461
DOI
10.1063/1.2011235
Date
2005-08

Abstract

The impact of material models on the numerical simulation of springback is investigated. The study is focused on the strain-path sensitivity of two hardening models. While both models predict the Bauschinger effect, their response in the transient zone after a strain-path change is fairly different. Their respective predictions are compared in terms of sequential test response and of strip-drawing springback. For this purpose, an accurate and general time integration algorithm has been developed and implemented in the Abaqus code. The impact of several numerical parameters is also studied in order to assess the overall accuracy of the finite element prediction. For some test geometries, both material and numerical parameters are shown to clearly influence the springback behavior at a large extent. Moreover, a general trend cannot always be extracted, thus justifying the need for the finite element simulation of the stamping process.

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