MODEL UPDATING USING SUBSTRUCTURE. MODAL DATA

摘要：

In vibration-based model updating,the finite element model is iteratively modified to ensure its vibration properties reproduce the measured counterparts in an optimal way. Updating the finite element model of a large-scale structure is very expensive in terms of computation time and memory. The substructuring method is a promising solution for reducing the computational load in coping with large-scale model. In this paper,a substructural flexibility matrix is extracted from the modal data measured on the global structure under the constraints of force compatibility and displacement compatibility. As a result,the focused substructure is treated as an independent structure to be updated directly using a common model updating method,thus accelerating the conventional optimization process. The effectiveness of the method in model updating and damage identification is demonstrated through its application to a laboratory-tested frame structure.

关键词： Model updating Substructuring Modal flexibility

作者: Shun Weng Yong Xia You-Lin Xu

作者单位: Department of Civil and Structural Engineering,the Hong Kong Polytechnic University,Hunghom,Kowloon,Hong Kong,P.R.China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 163-172

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）