The damage diagnosis method based on vibration testing can be further classified as a direct system identification method, a damage index method and a finite element model modification method.
其中基于振动测试的损伤诊断法可进一步分为直接的系统识别方法、损伤指标法和有限元模型修正法。
And then obtained the modification model of sensor shell with sufficient accuracy by adopting the combined modeling method of experimental modality analysis and finite element modeling.
然后采用实验模态分析和有限元建模相结合的建模方法，获得了足够精度的传感器壳修正模型。
An optimization model for low noise design of an automobile body structure is developed based on the dynamic substructure modification method.
在动态子结构修改方法的基础上，建立了车身结构的低噪声优化设计模型。
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