| 1. | Based on structural dynamics , different damage diagnosis index , such as modal frequency variety , modal assurance criterion , co - ordinate modal assurance criterion , modal strain energy , remains force vector , modal strain , rigidity change , flexibility matrix , modal curvature and so on , are studied in this thesis 基于结构动力学理论,本文论述多种损伤识别指标的基本原理和计算方法,主要包括:固有频率变化率、模态置信因子、改进的模态置信因子、模态应变能、残余力向量、应变模态、刚度变化、柔度矩阵、曲率模态等。 |