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首页> 外文期刊>Journal of teoretical and applied mechanics >IDENTIFICATION STRATEGY OF ANISOTROPIC BEHAVIOR LAWS: APPLICATION TO THIN SHEETS OF ALUMINIUM A5
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IDENTIFICATION STRATEGY OF ANISOTROPIC BEHAVIOR LAWS: APPLICATION TO THIN SHEETS OF ALUMINIUM A5

机译：各向异性行为规律的识别策略：在A5铝薄板中的应用

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摘要

Numerical simulation provides a valuable assistance in the controlling of forming processes. The elasto-plastic orthotropic constitutive law is based on the choice of an equivalent stress, a hardening law and a plastic potential. An identification of the model parameters from an experimental database is developed. This database consists in hardening curves and Lank-ford coefficients of specimens subjected to off-axis tensile tests. The proposed identification strategy is applied to aluminum sheets. The behavior of this material is studied under several solicitations. The anisotropic behavior of the aluminum plate is modeled using the Barlat criterionand the hardening law. The obtained Lankford coefficients are compared to those which are identified by a different strategy.
机译：数值模拟为控制成形过程提供了宝贵的帮助。弹塑性正交异性本构律基于等效应力，硬化规律和可塑性的选择。从实验数据库中识别出模型参数。该数据库包含经受离轴拉伸测试的试样的硬化曲线和兰克福德系数。建议的识别策略适用于铝板。这种材料的行为是在几个请求下研究的。利用Barlat准则和硬化定律对铝板的各向异性行为进行建模。将获得的兰克福德系数与通过其他策略确定的系数进行比较。

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