Based on meshless method to detect multiple cracks in beam structures

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (13) : 206-211.

Luo Zhigang1,Jiang Zhansi1, Wang yanxue1, Xiang Jiawei2

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Abstract

Research multiple cracks cantilever structure recognition based on meshless methods. By locally weighted residual method to crack into the discrete system equations through a virtual boundary, Establish multi-cracked beam structural dynamics model to obtain quantitative identification of positive problem database. Combined curvature modal method to find the crack position, then being measured frequency input as the inversion, using particle swarm optimization to quantitatively predict the extent of damage cracks. Numerical simulations show that, the method is simple, suitable for simulation of discontinuous cracks problem, it provides a new way for multiple cracks identification.

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meshless method / multiple cracks / identification

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Luo Zhigang1,Jiang Zhansi1, Wang yanxue1, Xiang Jiawei2. Based on meshless method to detect multiple cracks in beam structures[J]. Journal of Vibration and Shock, 2016, 35(13): 206-211

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