Plane stress yield function for aluminum alloy sheets—part 1: theory

A new plane stress yield function that well describes the anisotropic behavior of sheet metals, in particular, aluminum alloy sheets, was proposed. The anisotropy of the function was introduced in the formulation using two linear transformations on the Cauchy stress tensor. It was shown that the acc...

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Bibliographic Details
Published in:International journal of plasticity 2003-09, Vol.19 (9), p.1297-1319
Main Authors: Barlat, F., Brem, J.C., Yoon, J.W., Chung, K., Dick, R.E., Lege, D.J., Pourboghrat, F., Choi, S.-H., Chu, E.
Format: Article
Language:English
Subjects:
B. Constitutive modeling
B. Metallic materials
B: Anisotropic materials
C. Mechanical testing
Yield function
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Summary:A new plane stress yield function that well describes the anisotropic behavior of sheet metals, in particular, aluminum alloy sheets, was proposed. The anisotropy of the function was introduced in the formulation using two linear transformations on the Cauchy stress tensor. It was shown that the accuracy of this new function was similar to that of other recently proposed non-quadratic yield functions. Moreover, it was proved that the function is convex in stress space. A new experiment was proposed to obtain one of the anisotropy coefficients. This new formulation is expected to be particularly suitable for finite element (FE) modeling simulations of sheet forming processes for aluminum alloy sheets.
ISSN:0749-6419
1879-2154
DOI:10.1016/S0749-6419(02)00019-0