A two-step approach for damage detection in beam based on influence line and bird mating optimizer

Dong Tan1, Zhong Rong Lu2

Department of Applied Mechanics, Sun Yat-sen University, Guangzhou, Guangdong Province, P. R. China

2Corresponding author

E-mail: 1fpo567@outlook.com, 2lvzhr@mail.sysu.edu.cn

Received 21 September 2017; accepted 28 September 2017

DOI https://doi.org/10.21595/vp.2017.19211


Abstract. This paper presents a two-step approach for structural damage identification in beam structure using the influence line and bird mating optimizer (BMO). Local damage is simulated as the reduction of the elemental Young’s modulus and mass of beam element. The technique for damage localization based on influence line and its derivatives before and after damage for beam structure was outlined. An objective function comprised of dynamic acceleration is utilized for BMO algorithm. The dynamic response data under external force is calculated by Newmark integration method. Numerical examples of a simply supported beam was investigated. Effect of measurement noise is studied. Studies in the paper indicate that the proposed method is efficient and robust for identifying damages in beam structures.

Keywords: damage identification, influence line residue, bird mating optimizer, dynamic responses.


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Cite this article

Tan Dong, Lu Zhong Rong A two‑step approach for damage detection in beam based on influence line and bird mating optimizer. Vibroengineering PROCEDIA, Vol. 14, 2017, p. 102‑107.


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