Secondly, carry on the mode analysis to the girder, research the girder vibration property and the probability of crackle takes shape in the vibration effects of traveling organization pedestal.

其次，本文对主梁进行了模态分析，研究了主梁的振动特性以及运行机构底座处下盖板在振动的影响下，产生裂纹的可能性。

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In this paper, based on the analysis of preceding research, a parameter, called mode shape curvature ratio, is put forward for damage identification of reinforced concrete framed structure.

本文在分析以往研究成果的基础上，找到了一个基于曲率模态的对钢筋混凝土框架结构损伤识别有效的参数——振型曲率比。

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Therefore, through structural modal analysis with different damage degree using ANSYS, get natural frequencies and mode shape data as neural network input vector after unitary.

因此，通过有限元软件ANSYS对具有各种损伤程度的结构进行模态分析，得到固有频率和模态分量的数据，经过归一化处理后作为神经网络的输入向量。

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