Simulation Research on Damage Identification of Simply Supported Beam Based on Wavelet Packet Energy Method

Authors

Xijun Liu, School of Mechanical Engineering,Tianjin University, Tianjin 300350, China;
Xiankun Tao, School of Mechanical Engineering,Tianjin University, Tianjin 300350, China;
Suxia Zhang, School of Mechanical Engineering,Tianjin University, Tianjin 300350, China;

Abstract

Abstract: A finite element model of simply-supported beam is built by ANSYS;the displacement response of the beam is used to make wavelet packet analysis with MATLAB to get the curvature difference of WP-E (wavelet packet energy);and the studies on the effects of different parameters on damage recognition results of simple beam bridge are carried out, such as damage locations, damage level, measuring point density and speed of moving loads. For the condition of less measuring points, a method of arranging the measuring points by two steps is proposed. The normalized curvature difference of WP-E is made to study the robustness of this method to noise. The results show that the wavelet packet-energy method is effective and accurate in the damage detection of simply supported beam.

Recommended Citation

Liu, Xijun; Tao, Xiankun; and Zhang, Suxia (2019) "Simulation Research on Damage Identification of Simply Supported Beam Based on Wavelet Packet Energy Method," Journal of System Simulation: Vol. 31: Iss. 6, Article 21.
DOI: 10.16182/j.issn1004731x.joss.17-0186
Available at: https://dc-china-simulation.researchcommons.org/journal/vol31/iss6/21

First Page

1201

Revised Date

2018-08-14

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.17-0186

Last Page

1207

CLC

TP391.9

Recommended Citation

Liu Xijun, Tao Xiankun, Zhang Suxia. Simulation Research on Damage Identification of Simply Supported Beam Based on Wavelet Packet Energy Method[J]. Journal of System Simulation, 2019, 31(6): 1201-1207.

DOI

10.16182/j.issn1004731x.joss.17-0186