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首页> 外文会议>SSTA(Shell Structures: Theory and Applications) Conference; 20051012-14; Jurata(PL) >Experiences with viscoplastic constitutive equations in finite element shell analysis
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Experiences with viscoplastic constitutive equations in finite element shell analysis

机译：粘塑性本构方程在有限元壳分析中的经验

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摘要

In the paper problems of application of the viscoplastic constitutive models in the shell finite element analysis are considered. At the beginning the short history of models development is presented. Then, the most important assumptions, which must be made to obtain the viscoplastic model and apply it within the FEM shell analysis, are discussed. After the consist presentation of three selected models based on experiments, the problems of the constitutive models' parameters identification are presented. The special terms for viscoplastic analysis which must be introduced into the finite element approach are shown. Problems of numerical stability of calculations are also discussed. Finally, some examples of the geometrically nonlinear dynamic analysis illustrate the paper.
机译：在本文中，考虑了粘塑性本构模型在壳体有限元分析中的应用问题。首先，介绍了模型开发的简短历史。然后，讨论了最重要的假设，必须做出这些假设才能获得粘塑性模型并将其应用于FEM壳分析中。在基于实验对三个模型进行综合介绍之后，提出了本构模型参数辨识的问题。显示了必须引入有限元方法中的粘塑性分析专用术语。还讨论了计算的数值稳定性问题。最后，通过几何非线性动力学分析的一些例子对本文进行了说明。

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