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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >Constitutive modeling of shape memory alloys at finite strain
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Constitutive modeling of shape memory alloys at finite strain

机译:形状记忆合金的有限应变本构模型

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摘要

A new model which is able to reproduce the basic responses of shape memory materials on both micro- and macrostructural aspects is presented. The model is based on a local finite strain continuum description and uses a multiplicative decomposition of the total deformation gradient which involves elastic, plastic and microstructurally given phase transitional parts. For the elastic behavior of the material a coupled hyper-hypoelastic model is used based on a recently developed logarithmic rate. A complex constitutive equation is presented which consists of the kinetics of phase change process given by thermodynamical basis. Finally a simple one dimensional example is also shown. [References: 6]
机译:提出了一个新模型,该模型能够在微观和宏观结构方面再现形状记忆材料的基本响应。该模型基于局部有限应变连续体描述,并使用总变形梯度的乘法分解,其中涉及弹性,塑性和微观结构给定的相变部分。对于材料的弹性行为,基于最近开发的对数速率,使用耦合的超次弹性模型。提出了一个复杂的本构方程,该方程由热力学基础给出的相变过程动力学组成。最后,还显示了一个简单的一维示例。 [参考:6]

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