Constitutive modeling related uncertainties: Effects on deformation prediction accuracy of sheet metallic materials

Heng Yang,Heng Li,Jun Ma,Zhao Zhang,Jun Chen

International Journal of Mechanical Sciences（2019）

引用 18|浏览1

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摘要

•Investigated epistemic uncertainties related to constitutive modeling and discrepant effects on deformation prediction fluctuations.•Elaborated differences in the updating of normal strain for plane stress and 3D stress states by implicit integration.•Demonstrated different predictions of necking/fracture failure due to uncertainties induced errors for two metallic sheets in multi-stage forming.

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关键词

Uncertainties,Constitutive modeling,Deformation prediction,Failure prediction,Error estimation,Multi-stage cupping process

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