上海交通大学学报

上海交通大学学报 ›› 2003, Vol. 37 ›› Issue (12): 1916-1918.doi: 10.16183/j.cnki.jsjtu.2003.12.024

所属专题： 王建华教授学报发文专辑

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自适应有限元结合弧长法求解软化问题

陈肖峰, 王建华(), 崔海勇   

  1. 上海交通大学建筑工程与力学学院，上海 　200030
  • 收稿日期:2002-12-18 出版日期:2003-12-01 发布日期:2021-04-25
  • 作者简介:陈肖峰（1976-)，男，浙江台州人，硕士生，主要研究弹塑性自适应有限元．|王建华（联系人），男，教授，博士生导师，电话（Tel.): 021-62932915; E-mail: wjh417@sjtu.edu.cn.

Softening Materials Analysis by Combining Adaptive Mesh Generation Algotithm with Arc-Length Method

CHEN Xiao-feng, WANG Jian-hua(), CUI Hai-yong   

  1. School of Civil Eng. and Mechanics, Shanghai Jiaotong Univ. , Shanghai 200030, China
  • Received:2002-12-18 Online:2003-12-01 Published:2021-04-25

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摘要：

将自适应有限元与弧长法迭代算法相结合，用于软化材料的弹塑性有限元计算．讨论了程序中软化材料的弹塑性计算、本构积分、弧长法迭代、自适应有限元，得到了自适应有限元与弧长法结合计算软化问题的流程图．算例分析结果验证了本文分析方法的有效性，表明自适应有限元在模拟局部化问题中具有优势．

关键词: 软化, 本构积分, 弧长法, 弹塑性, 有限元分析

Abstract:

The paper presented a new method to implement the elastoplastic FEM analysis of softening materials by combining the algorithm of adaptive mesh generation with the algorithm of arc-length control procedures. The integration of elastoplasticity, arc-length control procedures and the algorithm of adaptive mesh generation were focused on. The flow chart of combining the algorithm of adaptive mesh generation with the algorithm of arc-length control procedures was offered. The numerical results confirm the efficiency of the present analysis method.

Key words: soften, integration of elastoplasticity, arc-length method, elastic-plastic, finite elements analysis

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