AN IMPROVED METHOD OF STRUCTURAL DAMAGE DETECTION BASED ON FREQUENCY RESPONSE FUNCTION

作     者：H.F. Yang* Y.J. Yan Z.Y. Wu (School of Mechanics Civil and Architecture Northwestern Polytechnical University XI’AN 710072) 

会议名称：《第六届国际振动工程会议》

会议日期：2008年

学科分类：081405[工学-防灾减灾工程及防护工程] 08[工学] 0814[工学-土木工程] 

基　　金：supported by the Research and Development Program (863) (No.2006AA04Z437) the National Natural Science Foundation of China (No.50375123, 10472093) 

关 键 词：structural damage detection frequency response function parameter inversion 

摘      要：This paper presents a improved method to measure the location and degree of structural damage based on frequency response *** method can refine dynamic model’s stiffness matrix by using a subset vectors from the full set of frequency response functions that are extracted from test data and calculated from analytical *** a result,frequency response functions obtained from the updated analytical model are coinciding with those *** location and degree of structural damage can be found through the *** method has definite physical meaning,avoid modal analysis, and can come into being the on-line monitor system. One numerical example checks the method’s validity and precision.