| 基于PolyMAX方法的某轿车白车身实验模态分析 |
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| 引用本文： | 谢小平,韩旭,吴长德,雷飞.基于PolyMAX方法的某轿车白车身实验模态分析[J].汽车工程,2009,31(5). |
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| 作者姓名： | 谢小平 韩旭 吴长德 雷飞 |
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| 作者单位： | 湖南大学,汽车车身先进设计制造国家重点实验室,长沙,410082 |
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| 摘 要： | 对实验模态分析的有关理论与方法,尤其是最小二乘复频域法的理论进行了详细介绍.分别采用最小二乘复频域法和最小二乘复指数法对某轿车白车身进行了实验模态分析并对其结果进行比较和分析.最后将实验结果和有限元模态分析结果进行对比,并结合刚度测试结果,对向车身提出改进意见.
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| 关 键 词： | 白车身 实验模态分析 最小二乘复指数法 最小二乘复频域法 模态判定准则 |
Experimental Modal Analysis for a Car Body-in-white Based on PolyMAX Method |
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| Xie Xiaoping,Han Xu,Wu Changde,Lei Fei.Experimental Modal Analysis for a Car Body-in-white Based on PolyMAX Method[J].Automotive Engineering,2009,31(5). |
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| Authors: | Xie Xiaoping Han Xu Wu Changde Lei Fei |
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| Institution: | Xie Xiaoping,Han Xu,Wu Changde & Lei Fei Hunan University,The State Key Laboratory of Advanced Design , Manufacturing for Vehicle Body,Changsha 410082 |
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| Abstract: | The relevant theory and methods of experimental modal analysis(EMA) are presented,in particular,the theory of least squares complex frequency domain method(LSCF,also called PolyMAX as a commercial name) in-detail.EMA on a car body-in-white(BIW) is conducted using both PolyMAX and least squares complex exponent method(LSCE) with their results compared and analyzed.Finally,the results of EMA using PolyMAX are compared to that of finite element modal analysis,and by combining with the results of stiffness meas... |
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| Keywords: | BIW EMA LSCE PolyMAX MAC |
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