基于振型扩充的板结构损伤识别
amage Identification of Plate Structures Based on
本文利用数值分析，将实际能够测量的弯曲方向的位移模态，通过扩充，间接得到完备的自由度信息，然后基于扩充后的完备自由度信息，利用模态应变能法对平面框架和板结构进行损伤识别，并和理论上完备自由度信息的识别效果相比较，结果表明，当自由度信息不完备时，基于振型扩充的模态应变能法能较好地识别板结构的单点损伤，而对板结构的多点损伤识别有一定的误差。
With numerical analysis the feasible bending displacement mode is expanded to get full information of parameters.Then, the method of modal strain energy is used for structural damage identification of the plane frames and plate structures based on full information of DOFS obtained by the mode shape expansion. Compared to the theoretical identification results of full information of DOFS, result indicates that the method of modal strain energy based on mode shapes expansion could be used to identify damage of the plate structures with some errors when the information of DOFS is incomplete.
许微微
工程基础科学
结构损伤识别、实测自由度、振型扩充、模态应变能
structural damage identification measured DOFS mode shapes expansion modal strain energy
许微微.基于振型扩充的板结构损伤识别[EB/OL].(2008-05-05)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/200805-68.点此复制
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