Validation of Modified Lemaitre’s Anisotropic Damage Model with the Cross Die Drawing Test

M.S. Niazi; H. H. Wisselink; T. Meinders

doi:10.4028/www.scientific.net/KEM.488-489.49

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 488-489Validation of Modified Lemaitre’s Anisotropic...

Validation of Modified Lemaitre’s Anisotropic Damage Model with the Cross Die Drawing Test

Abstract:

Dual Phase (DP) steels are widely replacing the traditional forming steels in automotive industry. Advanced damage models are required to accurately predict the formability of DP steels. In this work, Lemaitre’s anisotropic damage model has been slightly modified for sheet metal forming applications and for strain rate dependent materials. The damage evolution law is adapted to take into account the strain rate dependency and negative triaxialities. The damage parameters for pre-production DP600 steel were determined. The modified damage models (isotropic and anisotropic) were validated using the cross die drawing test. The anisotropic damage model predicts the crack direction more accurately.

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Periodical:

Key Engineering Materials (Volumes 488-489)

Pages:

49-52

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.488-489.49

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Online since:

September 2011

Authors:

M.S. Niazi, H. H. Wisselink, T. Meinders

Keywords:

Anisotropic Damage, Cross Die Drawing, DP Steel, Strain Rate Dependency

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