Study on Damage Identification of the Simply Supported Beam Employ the Difference of Deflection Influence Line under Symmetrically Load

Yunshuai Liu; Xiaoqin Wang; Feng Xi Zhou

doi:10.4028/www.scientific.net/AMM.166-169.1254

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 166-169Study on Damage Identification of the Simply...

Study on Damage Identification of the Simply Supported Beam Employ the Difference of Deflection Influence Line under Symmetrically Load

Abstract:

In order to solve the problem that it need too large number of sensors and data of undamaged structure, the method of damage detection employ difference of deflection influence line under symmetrically load is proposed. theoretical derivation and finite element simulation shows that the curvature of the influence line is less than zero when the moving load is located in the damage region and it is no less than zero when the moving load is located in the other regions. so the damage location and extent can be detected by using this method, furthermore, this detection method is suitable for not only single damage but also multi damage.