| 锥壳结构动态特性试验分析 |
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| 引用本文： | 杨志鹏,祝济之,杨飞虎,赵圣占.锥壳结构动态特性试验分析[J].强度与环境,2010,37(3):34-40. |
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| 作者姓名： | 杨志鹏 祝济之 杨飞虎 赵圣占 |
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| 作者单位： | 1. 北京强度环境研究所,北京,100076
2. 92941部队96分队,葫芦岛,125000 |
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| 摘 要： | 为得到某锥壳构件的动态特性进行了模态试验,对得到的频响函数通过最小二乘复指数和多参考最小二乘复频域等方法进行模态参数识别,识别结果与有限元计算结果进行比较,得出了锥壳结构的动态特性,通过比较识别结果,说明了模态识别方法的适用性。
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| 关 键 词： | 锥壳 模态分析 最小二乘复指数法 多参考最小二乘复频域法 |
Dynamic analysis of conical shell structure based on experimental modal analysis |
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| Yang Zhipeng,Zhu Jizhi,Yang Feihu,Zhao Shengzhan.Dynamic analysis of conical shell structure based on experimental modal analysis[J].Structure & Environment Engineering,2010,37(3):34-40. |
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| Authors: | Yang Zhipeng Zhu Jizhi Yang Feihu Zhao Shengzhan |
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| Institution: | 1 Beijing Institute of Structure and Environment Engineering, Beijing 100076, China; 2 96th Division, No 92941 Unit of PLA, Huludao 125000, China) |
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| Abstract: | An experiment on conical shell has been performed. All the modal parameters estimation is based upon FRFs. For modal analysis, three different estimation techniques are used： Least Square Complex Exponential method （LSCE） and Polyreference Least Complex Frequency method （PolyLSCF or PolyMax）. The modal parameters such as, modal frequency, damping ratios and modal shape, and relative merits of every method are concluded. By comparing the modal parameters with the results of finite element calculation using Nastran 2005, dynamic behavior of the structure is given. |
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| Keywords: | conical shell modal analysis LSCE polyLSCF |
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