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。
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.
其次，根据损伤后的结构频率与模态的变化，应用径向基神经网络，进行结构节点固结系数的识别，从而实现对网架结构有限元模型的修正。
Secondly, according to the change of damage structural frequency and modal, the fixity factor is identified by RBF neural network, then FEM correction of truss is finished.
第二步是用一种结合灵敏度法和矩阵修正法的混合方法确定结构损伤的程度。
The second step determines the damage extent of the structural damages by a hybrid approach combining the sensitivity and the matrix adjustment for damage assessment.
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