| 基于变形修正的局部刚体化动力模型简化方法 |
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| 引用本文： | 郑淑飞, 丁桦. 基于变形修正的局部刚体化动力模型简化方法[J]. 力学与实践, 2008, 30(6): 31-34. doi: 10.6052/1000-0879-2008-008 |
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| 作者姓名： | 郑淑飞 丁桦 |
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| 作者单位： | 中国科学院力学研究所工程科学部,北京 100080; 中科院力学所 北京 100080 |
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| 摘 要： | 提出一种基于变形修正的动力模型简化方法. 以复杂工程结构的有限元模型为基础，根据运动同步性假设将结构分成若干同步性区域. 采用适当的位移模式去逼近位移真值，再通过总体应变能最小来优化，从而得到整体位移与局部位移模式间的转换关系. 算例结果表明了简化方法的有效性.
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| 关 键 词： | 模型简化 变形修正 总体应变能 优化 |
| 收稿时间： | 2008-01-02 |
| 修稿时间： | 2008-02-21 |
A MODEL REDUCTION METHOD FOR DYNAMIC ANALYSIS BASED ON DEFORMATION MODIFICATION AND LOCAL RIGID BODY MODE |
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| A MODEL REDUCTION METHOD FOR DYNAMIC ANALYSIS BASED ON DEFORMATION MODIFICATION AND LOCAL RIGID BODY MODE[J]. Mechanics in Engineering, 2008, 30(6): 31-34. doi: 10.6052/1000-0879-2008-008 |
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| Authors: | ZHENG Shufei DING Hua |
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| Abstract: | A new model reduction method based on deformation modification is presented for dynamic analysis. Complex structures can be divided into several displacement synchronous parts by analyzing the finite element models based on a synchronistic assumption.The displacement can be approached by an appropriate mode, and the transformation relationship between global displacement and local displacement can be obtained by minimizing Global Strain Energy.The results of examples show the validity of the method. |
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| Keywords: | model reduction deformation modification global strain energy optimization |
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