中文摘要：

提出了一种新的基于频响函数的模型修正方法.该方法不但避免了模态分析过程,以设计参数为修正对象,而且不需要将有限元模型的频响函数与实验测得的频响函数进行匹配,仅需要少量实测的频响函数数据即可完成模型修正过程.通过桁架结构的模型修正算例表明,采用该模型修正方法在噪声的干扰下仍然能够获得理想的修正结果,证明了方法的有效性.

英文摘要：

This paper proposed a new model updating method based on frequency response functions which avoids the modal analysis process.This method takes the design parameters as the updating objects,moreover,it does not need matching the frequency response functions of the finite element model and the experiment and only a few measured data are needed to fulfill model updating.The model updating of a plane truss structure shows that the proposed method can get the perfect results under disturb of noise which proves the validity of the method.