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Structural Engineering and Mechanics Volume 67, Number 3, August10 2018 , pages 245-254 DOI: https://doi.org/10.12989/sem.2018.67.3.245 |
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Structural damage identification using cloud model based fruit fly optimization algorithm |
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Tongyi Zheng, Jike Liu, Weili Luo and Zhongrong Lu
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| Abstract | ||
| In this paper, a Cloud Model based Fruit Fly Optimization Algorithm (CMFOA) is presented for structural damage identification, which is a global optimization algorithm inspired by the foraging behavior of fruit fly swarm. It is assumed that damage only leads to the decrease in elementary stiffness. The differences on time-domain structural acceleration data are used to construct the objective function, which transforms the damaged identification problem of a structure into an optimization problem. The effectiveness, efficiency and accuracy of the CMFOA are demonstrated by two different numerical simulation structures, including a simply supported beam and a cantilevered plate. Numerical results show that the CMFOA has a better capacity for structural damage identification than the basic Fruit Fly Optimization Algorithm (FOA) and the CMFOA is not sensitive to measurement noise. | ||
| Key Words | ||
| damage identification; swarm intelligence; cloud model; fruit fly optimization algorithm; time domain data | ||
| Address | ||
| Tongyi Zheng, Jike Liu and Zhongrong Lu: Department of Applied Mechanics, Sun Yat-Sen University, Guangzhou, P.R. China Weili Luo: School of Civil Engineering, Guangzhou University, Guangzhou, P.R. China | ||