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

摘要：

This paper presents a improved method to measure the location and degree of structural damage based on frequency response function．The 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 model．As a result， frequency response functions obtained from the updated analytical model are coinciding with those measured．The location and degree of structural damage can be found through the deviation．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．

关键词： structural damage detection frequency response function parameter inversion

作者: H.F. Yang Y.J. Yan Z.Y. Wu

作者单位: School of Mechanics,Civil and Architecture,Northwestern Polytechnical University,XIAN,710072

会议类型: 国际会议

会议名称: 第六届国际振动工程会议(The 6th International Conference on Vibration Engineering)(ICVE’ 2008)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-06-04（万方平台首次上网日期，不代表论文的发表时间）