模态应变能法；
应用模态应变能理论得到了能用于板类结构损伤的识别指标。
Based on the theory of modal strain energy, a damage index is deduced to identify the plate-like structure damage.
简述了理论计算振动参数的方法，重点介绍了模态应变能法。
Outlines the calculation method of vibration parameters, focusing on the modal strain energy method.
基于模态应变能理论，得到能用于混凝土桥梁结构损伤的识别指标。
Based on the theory of modal strain energy, a damage index is deduced to identify the concrete bridge structure damage.
仿真结果表明，模态应变能比对结构损伤位置和损伤程度都比较敏感，是一种有效的损伤标识量。
The results of emulation indicate that damage features formed by mode strain energy ratio are feasible to identify the structure damage localization and damage severity.
利用单元局部频率变化率法和单元模态应变能比法，对连续梁桥进行了损伤诊断的数值模拟研究。
Based on element local frequency change ratio method and element modal strain energy ratio method, numerical study is carried on to detect the damage of the bridge.
基于遗传神经网络与模态应变能，提出了一种斜裂缝两阶段诊断方法，识别梁体中斜裂缝的位置、角度和深度。
Based on genetic neural network and modal strain energy, a two-stage method for detecting diagonal cracks is proposed to identify the location, Angle and depth of diagonal cracks in beams.
在此基础上对基于模态应变能的损伤识别方法进行了深入探讨，并提出了基于模态应变能比变化率的损伤识别新指标。
We go deep into discussing the studies on structural damage detection based on modal strain energy, and propose a new damage detection index based on the change of modal strain energy ratio.
本论文结合基于模态应变能改变的损伤识别方法、随机有限元法、概率统计方法，得出一套基于模态应变能改变的损伤统计识别方法。
The thesis combines finite element method, modal strain energy of change, and statistic method, develops a sort of damage statistic identification method.
该方法将单元模态应变能分解为拉压、扭转和弯曲模态应变能，利用单元的主要模态应变能分量与结构固有频率的改变量对结构裂纹位置进行识别。
In the method the modal strain energy of an element is divided into tension modal strain energy, torsion modal strain energy and bending modal strain energy.
本文基于应变模态的工作，利用应变模态识别得到的振型和频率结果，提出广义应变比能（GSED）的概念。
The paper gives a new concept generalized strain energy density (GSED). It is based on the strain mode frequency and mode shape. It is very effective and its physical meaning is clear.
本文基于应变模态的工作，利用应变模态识别得到的振型和频率结果，提出广义应变比能（GSED）的概念。
The paper gives a new concept generalized strain energy density (GSED). It is based on the strain mode frequency and mode shape. It is very effective and its physical meaning is clear.
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