A two-step approach for damage detection in beam based on influence line and bird mating optimizer
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 Youngs 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.
damage identification influence line residue bird mating optimizer dynamic responses
Dong Tan Zhong Rong Lu
Department of Applied Mechanics, Sun Yat-sen University, Guangzhou, Guangdong Province, P.R.China
国际会议
The 28th International Conference on Vibroengineering (第28届国际振动工程会议)
北京
英文
102-107
2017-10-19（万方平台首次上网日期，不代表论文的发表时间）