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提出一种基于模型修改的损伤检测理论方法。此方法是先对结构的有限元分析模型进行修正 ,然后运用此模型来模拟原始结构 ,损伤发生前后的模型计算模态模拟测试模态 ,最后运用最小二乘法确定损伤。
A damage detection theory method based on model modification is proposed. In this method, the finite element model of the structure is modified first, and then the model is used to simulate the original structure. The model before and after damage is calculated to calculate the modal simulation test modality. Finally, the least squares method is used to determine the damage.