Direct and inverse problems on free vibration analysis of cracked non-uniform beams carrying spring-mass systems by finite element method

Guojin Tan1, Ziyu Liu2, Jinghui Shan3, Chunli Wu4

College of Transportation, Jilin University, Changchun, China

4Corresponding author

E-mail: 1tgj@jlu.edu.cn, 2625448938@qq.com, 3313774894@qq.com, 418844197012@163.com

Received 10 September 2017; accepted 18 September 2017

DOI https://doi.org/10.21595/vp.2017.19148

 

Abstract. This paper presents an analytical approach to investigate the free vibration analysis of cracked non-uniform beam carrying spring-mass systems by finite element method and illustrates a valid and reliable damage identification method which using hybrid neural genetic technique. Firstly, based on the finite element method, the dynamic characteristics of non-uniform cracked beam carrying spring-mass systems are obtained. Then, the first five frequencies are used as input parameters by combining genetic algorithm with neural network to identify the damage. Finally, Numerical simulations of direct and inverse problems of non-uniform cracked beams carrying a spring-mass system are carried out.

Keywords: crack, non-uniform beam, dynamic characteristic, finite element method.

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Cite this article

Tan Guojin, Liu Ziyu, Shan Jinghui, Wu Chunli Direct and inverse problems on free vibration analysis of cracked non‑uniform beams carrying spring‑mass systems by finite element method. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 7‑12.

 

JVE International Ltd. Vibroengineering PROCEDIA. Oct 2017, Vol. 14. ISSN 2345-0533