| 带有沙漏控制的相对自由度壳元非线性动力分析 |
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| 引用本文： | 陈丽华, 程建钢, 黄文彬. 带有沙漏控制的相对自由度壳元非线性动力分析[J]. 固体力学学报, 2002, 23(2): 237-242. doi: 10.3969/j.issn.0254-7805.2002.02.018 |
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| 作者姓名： | 陈丽华 程建钢 黄文彬 |
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| 作者单位： | 中国农业大学(东校区)力学教研室,北京,100083; 清华大学工程力学系,北京,100084; 中国农业大学(东校区)力学教研室,北京,100083 |
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| 基金项目： | 国家自然科学基金 (编号 5 9875 0 4 5，汽车安全与节能国家重点实验室开放基金 (K970 5 )资助 . |
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| 摘 要： | 针对八节点相对自由度壳单元,给出了单元内坐标和位移的插值公式,利用Hu-Washinzu变分原理,基于拟应变法,在大变形情况下推导了拟应变的表达式,构造了带有沙漏控制的动力问题的有限元求解格式.通过算例表明该文提出的基于相对自由度壳元的沙漏控制算法能够很好地解决非线性动力问题,可改善计算精度和计算效率.
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| 关 键 词： | 相对自由度壳单元 拟应变 沙漏 非线性 |
| 修稿时间： | 2000-11-08 |
AN 8-NODE SHELL ELEMENT OF RELATIVE DEGREES OF FREEDOM WITH HOURGLASS CONTROL FOR NONLINEAR DYNAMIC ANALYSIS |
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| AN 8-NODE SHELL ELEMENT OF RELATIVE DEGREES OF FREEDOM WITH HOURGLASS CONTROL FOR NONLINEAR DYNAMIC ANALYSIS[J]. Chinese Journal of Solid Mechanics, 2002, 23(2): 237-242. doi: 10.3969/j.issn.0254-7805.2002.02.018 |
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| Authors: | Chen Lihua Cheng Jiangang Huang Wenbin |
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| Affiliation: | Chen Lihua 1 Cheng Jiangang 2 Huang Wenbin 1 |
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| Abstract: | An efficient and accurate one point quadrature 8 node shell element of relative degrees of freedom is developed for nonlinear dynamic structural analyses. With the aid of Hu Washinzu variational principle, hourglass control is provided to suppress spurious modes via the assumed strain method, and the accuracy of the element is enhanced. The assumed strain fields are constructed for large deformation analysis. Several numerical examples are presented to demonstrate the applicability of the element proposed. |
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| Keywords: | shell element of relative degrees of freedom assumed strain hourglass nonlinear |
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