Damage Diagnosis of Truss Structures Based on Changes in Frequency

摘要：

A damage detection method of truss structures based on the changes of frequency presented. The method requires pre-damage mode shapes, pre-damage frequency measurements, and post-damage frequency measurements. The fractional scalar ci can be obtained by the Moore-Penrose pseudo-inverse or the NNLS (Nonnegative Least Squares) algorithm. Numerical results show that the method can localize and quantify the damage in truss structures precisely.

关键词： truss structures natural frequency damage localization damage severity quantification

作者: Bao Zhongyou

作者单位: School of Civil and Arch, East China Jiaotong University, Nanchang 330013

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）