【摘要】 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。更多还原

【Abstract】 A theoretical method of structural damage detection based on updating the finite element models of structures is presented.At first,the finite element model is updated.Then the original structure is simulated by the model,and the calculated modes of the model of damaged or undamaged structure simulate the measured modes of damage or undamaged structure,respectively.At last,this paper applies the method to locate structural damage and furthermore,to determine the magnitudes of damage by the least squares technique.更多还原