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Cross-model cross-mode method for model updating

机译:跨模型交叉模式的模型更新方法

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摘要

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.
机译:模型更新已成为改善有限元模型与测量数据之间相关性的常用方法。本文开发了一种直接的物理属性调整模型更新方法,称为交叉模型交叉模式(CMCM)方法。这种新方法能够基于非常有限的测量模态和模态频率同时更新质量和刚度矩阵。数值示例演示了两种结构模型,即剪力建筑物模型和三维框架结构模型。数值结果表明,通过应用CMCM方法可以实现出色的更新。

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