Cross-model cross-mode method for model updating
Cross-model cross-mode method for model updating
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DOI：
10.1016/j.ymssp.2006.07.012
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发表时间：
2007-05-01
影响因子：
8.4
通讯作者：
Wang, Shuqing
中科院分区：
文献类型：
--
作者：
Hu, Sau-Lon James;Li, Huajun;Wang, Shuqing
模型修正已成为提高有限元模型与实测数据相关性的常用方法。本文提出了一种直接的物性平差模型修正方法--跨模型跨模态法。这种新方法能够根据非常有限的测量模态振型和模态频率同时更新质量和刚度矩阵。两种结构模型，剪切型建筑模型和三维框架结构模型，在数值算例中进行了演示。数值结果表明，一个很好的更新是可以实现的应用CMCM方法。(c)2006爱思唯尔有限公司保留所有权利。
Model updating has become a common method to improve the correlation between finite-element models and measured data. This paper develops a direct, physical property adjustment model updating method, named as cross-model cross-mode (CMCM) method. This new method is capable of updating the mass and stiffness matrices simultaneously based on very limited measured mode shapes and modal frequencies. Two structural models, a shear building model and a three-dimensional frame structural model, are demonstrated in the numerical examples. Numerical results indicate that an excellent updating is achievable by applying the CMCM method. (c) 2006 Elsevier Ltd. All rights reserved.