文章摘要
引用本文:Feng Yaoqi,Zhu Dangdang.[J].航天器环境工程,2007,24(4):231-234 本文二维码信息
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A study on using modal parameters and vibration test data to update dynamic model
投稿时间:2006-11-06  
DOI:
中文关键词:  
English Keywords:dynamic model  vibration test  modal parameters  frequency response functions
基金项目:
作者单位
Feng Yaoqi Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China
 
Zhu Dangdang China Academy of Space Technology, Beijing 100094, China 
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中文摘要:
      
English Summary:
      This paper presents a synthesized model updating method using the modal parameters and frequency response functions(FRF) extracted from the vibration test data. Based on an established preliminary dynamic model, this method first updates the analytical model by use of the measured modal parameters, and then updates the dynamic characteristics of the analytical model with the measured frequency response functions in order that the modal parameters and FRF acceleration obtained by the updated dynamic model agree well with those measured. The detailed mathematical theory and formulation of this method are presented in the paper. The validation and accuracy of this method is analyzed and discussed through a numerical example.
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