Updating finite element model of structures with semi-rigid joints and boundary

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外文摘要：Updating the finite element models of structures with semi-rigid joints and boundary are studied。 While most researches in this field are on updating semi-rigid joints with moment-rotation effect， in this paper a hybrid finite element to consider both the moment-rotation and shear-displacement effects of joint are proposed。 The hybrid element is composed of a beam element with two connections at both ends， and the semi-rigidity of joints of both rotational and shear effects are simulated at the two ends。 The stiffness matrix and mass matrix of the hybrid finite element are formulated。 A hybrid optimization technique is applied to update structures with semi-rigid joints and boundary。 The method proposed is experimentally studied by updating the finite element of a 14-bay beam。 The results show that the method can produce an analytical model that better duplicates the dynamic property of actual structure while keep physical connectivity between them。

外文关键词：

structural model updatingsemi-rigid jointhybrid elementoptimization technique

作者：

Yang Liu、Zhongdong Duan、Hao Liu

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作者单位：

Harbin Institute of Technology, Harbin, 150090, China

会议名称：

Conference on Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems; 20060227-0302; San Diego,CA(US)

会议地点：

San Diego,CA(US)

会议母体文献：

Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems pt.2

页码：

P.61743L.1-61743L.13

出版时间：

2006