基于有限元的结构动力学响应映射技术研究

王轲;张方;陈国平;张安平

振动与冲击 ›› 2010, Vol. 29 ›› Issue (11) : 35-37.

PDF(1193 KB)
PDF(1193 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (11) : 35-37.
论文

基于有限元的结构动力学响应映射技术研究

  • 王轲; 张方; 陈国平; 张安平
作者信息 +

Research on the Response Mapping Technique of Structural Dynamics Based onFinite Element Model

  • Wang Ke; Zhang Fang ; Chen Guoping ; Zhang Anping
Author information +
文章历史 +

摘要



本文研究了结构动力学试验响应测量数据的映射技术。借助于比较精确的结构动力学有限元模型,
在力激励或基础激励条件下,通过傅立叶变换、逆变换和矩阵运算,可以从试验结构的少量测量自由度上
的时域动响应时间历程映射得到整个结构上任意自由度上的动响应时间历程。文中推导了这种响应映射的
具体公式,说明了该方法可应用的领域与存在的问题。并通过某结构基础激励响应测试的实例验证了该技
术的可行性。该映射方法已被编制为软件, 并与MSC/NASTRAN 有限元仿真分析软件集成。



Abstract

In this paper, the mapping technique of the structure dynamic response measured in
tests is researched. The time domain dynamic response of arbitrary freedom in a structure can be
mapped from the structure-dynamic response data which are obtained from the dynamical test on
the condition of force and displacement excitement through the Fourier transformation and matrix
calculation based on precise structure-dynamic finite element model. The expressions of the
response mapping are deduced too. Some fields in which the response mapping method is feasible
and the problems existed are also introduced in the paper. The feasibility of the technique is
proved by an example of a structure response test with basement exciting. The mapping method
has been programmed and integrated with MSC/NASTRAN software.

关键词

建模 / 有限元 / 结构动力学 / 响应 / 映射

Key words

building model / finite element / structure dynamics / response / mapping

引用本文

导出引用
王轲;张方;陈国平;张安平. 基于有限元的结构动力学响应映射技术研究[J]. 振动与冲击, 2010, 29(11): 35-37
Wang Ke;Zhang Fang;Chen Guoping;Zhang Anping. Research on the Response Mapping Technique of Structural Dynamics Based onFinite Element Model[J]. Journal of Vibration and Shock, 2010, 29(11): 35-37

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