| 引用本文: | 李云良,谭惠丰,谭忆秋,鲁明宇,欧进萍.薄膜二次屈曲行为的数值仿真分析[J].哈尔滨工业大学学报,2010,42(5):784.DOI:10.11918/j.issn.0367-6234.2010.05.025 |
| LI Yun-liang,TAN Hui-feng,Tan Yi-qiu,LU Ming-yu,OU Jin-ping.Numerical simulation analysis of membrane secondary buckling behavior[J].Journal of Harbin Institute of Technology,2010,42(5):784.DOI:10.11918/j.issn.0367-6234.2010.05.025 |
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| 摘要: |
| 建立了薄膜二次屈曲分析的数值方法.采用施加面外扰动力的方式在薄膜中引入任意的初始缺陷,分析了薄膜的二次屈曲现象.分析表明,在薄膜的后屈曲过程中,由于初始缺陷的存在,褶皱构形不稳定,出现二次屈曲现象,产生了新的褶皱.后屈曲平衡路径呈现多阶段的特点.在不同的初始缺陷和加载过程的情况下,薄膜的后屈曲过程会出现连续的二次屈曲现象.二次屈曲过程中薄膜可能是稳定的也可能是不稳定的,与初始缺陷及加载过程有关. |
| 关键词: 薄膜 褶皱 二次屈曲 数值方法 |
| DOI：10.11918/j.issn.0367-6234.2010.05.025 |
| 分类号:TU399 |
| 基金项目:新世纪优秀人才支持计划资助项目(NCET-08-0150) |
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| Numerical simulation analysis of membrane secondary buckling behavior |
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LI Yun-liang1,2, TAN Hui-feng3, Tan Yi-qiu1, LU Ming-yu4, OU Jin-ping2,5
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1.School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China;2.Post-doctoral Research Center in Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;3.Center for Composite Materials,Harbin Institute of Technology,Harbin 150001,China;4.Dept.of Mechanical Engineering,Hong Kong Polytechnic University,Hong Kong,China;5.School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116023,China)
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| Abstract: |
| Numerical analysis method of membrane secondary buckling was developed.Arbitrary initial flaw was introduced into membrane by applying outside disturbance,and the phenomenon of membrane secondary buckling was analyzed.It is indicated that in the process of membrane post-buckling,the phenomenon of membrane secondary buckling appears because of initial flaw,wrinkle configuration is instable,and new wrinkles are produced.Post-buckling equilibrium path presents the multistage characteristic.In the case of different initial flaws and loading processes,the phenomenon of continuous secondary buckling emerges in the process of membrane post-buckling.It is concluded that membrane can be stable or not in the course of secondary buckling,which depends on initial flaw and loading process. |
| Key words: membrane wrinkle secondary buckling numerical method |
