| 附加自由阻尼结构系统的有限元分析和拓扑优化设计方法研究 |
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| 引用本文： | 吕毅宁,吕振华,赵波,王超.附加自由阻尼结构系统的有限元分析和拓扑优化设计方法研究[J].计算力学学报,2012,29(2):178-183. |
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| 作者姓名： | 吕毅宁 吕振华 赵波 王超 |
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| 作者单位： | 1. 清华大学汽车工程系汽车安全与节能国家重点实验室,北京100084／中国船级社技术研究开发中心,北京100007
2. 清华大学汽车工程系汽车安全与节能国家重点实验室,北京,100084 |
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| 基金项目： | "十一五"863计划重点(2006AA110103)资助项目. |
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| 摘 要： | 给出了一种适用于车身等复杂附加阻尼结构系统的有限元建模和动态特性分析方法,包括附加自由阻尼薄壁结构和附加阻尼材料粘弹性特性的有限元建模方法以及附加阻尼结构动态特性的有限元分析方法。在此基础上,又以强迫振动响应最小为优化设计目标,给出了一个附加阻尼结构的拓扑优化设计方法,包括优化设计问题的列式和适用的求解算法。通过对一个简单薄壁构件和一个车身地板上的附加阻尼结构的拓扑优化设计,验证了提出的有限元分析和拓扑优化设计方法的有效性。
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| 关 键 词： | 附加阻尼 有限元分析 拓扑优化 车身结构 |
| 收稿时间： | 2010/9/26 0:00:00 |
| 修稿时间： | 1/4/2011 12:00:00 AM |
A finite element analysis and topology optimization method for structures with free damping |
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| LV Yi-ning,LV Zhen-hu,ZHAO Bo and WANG Chao.A finite element analysis and topology optimization method for structures with free damping[J].Chinese Journal of Computational Mechanics,2012,29(2):178-183. |
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| Authors: | LV Yi-ning LV Zhen-hu ZHAO Bo and WANG Chao |
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| Institution: | State Key Laboratory of Automotive Safety and Energy, Department of Automotive Engineering, Tsinghua University, Beijing 100084, China; Technology Research and Development Center, China Classification Society, Beijing 100007, China;State Key Laboratory of Automotive Safety and Energy, Department of Automotive Engineering, Tsinghua University, Beijing 100084, China;State Key Laboratory of Automotive Safety and Energy, Department of Automotive Engineering, Tsinghua University, Beijing 100084, China;State Key Laboratory of Automotive Safety and Energy, Department of Automotive Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | A finite element (FE) modeling and analysis method is proposed for the dynamic analysis of complex structures with free damping such as car bodies,which consists of effective FE modeling methods for both thin-walled structures with free damping and visco-elastic material characteristics,and suitable FE analysis methods for their dynamic analysis as well.A topology optimization method is then proposed for optimal design of damping treatments with the objective of minimizing forced response,which consists of design optimization problem formulation and choice of suitable solution algorithms.The applied damping of both a simple thin plate and a practical car floor panel are analyzed and optimized,which demonstrates the effectiveness of the proposed analysis and topology optimization methods. |
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| Keywords: | applied damping finite element analysis topology optimization automotive body structure |
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