| 钟伟芳,杨自春,朱达善,黄玉盈,陈毅明,钱勤.各向异性弹塑性中厚度板壳的有限元分析[J].计算力学学报,1994,11(4): |
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| 各向异性弹塑性中厚度板壳的有限元分析 |
| Anisotropic elasto-plastic finite element analysis of moderately thick plates and shells |
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| DOI：10.7511/jslx19944050 |
| 中文关键词: 弹塑性 各向异性板壳／有限元方法 弧长控制法 |
| 英文关键词:elastic plastic,finite element method,anisotropic/plate and shell,arc-length method |
| 基金项目:光华基金 |
| 钟伟芳 杨自春 朱达善 黄玉盈 陈毅明 钱勤 |
| 华中理工大学力学系 |
| 摘要点击次数: 1458 |
| 全文下载次数: 0 |
| 中文摘要: |
| 本文在文献［２，３］的基础上，提出了一个解各向异性弹塑性中厚度板壳问题的有限元方法。考虑材料各向异性的特点，采用了Ｈｉｌｌ推广的Ｈｕｂｅｒ－Ｍｉｓｅｓ屈服准则；借用Ｏｗｅｎ的剪切修正系数，正确计及了叠层复合材料壳体的横向剪切效应；为了避免“自锁”现象，文中采用了９节点的Ｈｅｔｅｒｏｓｉｓ二次壳单元；特别是本文利用插值外推的思想，提出了一个带预测的弧长增量控制法，显著提高了确定变形路径的计算效率。几个数值算例表明本文给出的有限元方法对于各向异性中厚度板壳的弹塑性分析有较好的精度，尤其是对具有复杂变形路径的结 |
| 英文摘要: |
| Based on anisotropic elasto-plastic finite element method developed by Owen,a nu-merical ana1ysis of composite laminate plates and shells with moderate thickness is undertak-en,The Huber-Mises yield surface extended by Hill and the nine-node Heterosis element areintroduced into the present model.In order to increase the computational accuracy and thespeed of convergence an improving arc-length iteration method for solving nonlinear incre-ment finite element equations is presented.Numerical examples are given and compared with available solutions.It is shown thatthe proposed method is more efficient than existing finite element methods. |
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