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首页> 外文期刊>Journal of Applied Mechanics >A General Orthotropic von Mises Plasticity Material Model With Mixed Hardening: Model Definition and Implicit Stress Integration Procedure
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A General Orthotropic von Mises Plasticity Material Model With Mixed Hardening: Model Definition and Implicit Stress Integration Procedure

机译：具有混合硬化的一般正交各向异性冯·米塞斯塑性材料模型：模型定义和内隐应力积分程序

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摘要

A general orthotropic von Mises plasticity model, with an extension of the Hill's yield criterion to include mixed hardening, is introduced in the paper. Material constants and equivalent stress-equivalent plastic strain curves are defined in a way to suggest their experimental determination. The model represents a special case of a general anisotropic metal plasticity model proposed by the authors. An implicit stress integration procedure, representing an application of the governing parameter method (GPM) introduced by the first author, is presented. The GPM is briefly described, and the computational procedure, together with calculation of the consistent tangent moduli, are given in some detail for a general three-dimensional deformation, with direction of application to plane stress/shell conditions. Numerical examples illustrate applicability of the model and effectiveness of the computational algorithm.
机译：本文介绍了一般正交各向异性的冯·米塞斯塑性模型，并扩展了希尔的屈服准则以包括混合硬化。定义材料常数和等效应力等效塑性应变曲线的方式是建议它们进行实验确定。该模型代表了作者提出的一般各向异性金属塑性模型的特例。提出了隐式应力积分过程，该过程代表了第一作者提出的控制参数方法（GPM）的应用。简要介绍了GPM，并针对一般的三维变形，详细介绍了计算程序以及一致的切线模量的计算方法，以及在平面应力/壳体条件下的应用方向。数值例子说明了该模型的适用性和计算算法的有效性。

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