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Structural Engineering and Mechanics Volume 64, Number 3, November10 2017 , pages 353-360 DOI: https://doi.org/10.12989/sem.2017.64.3.353 |
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BB-BC optimization algorithm for structural damage detection using measured acceleration responses |
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J.L. Huang and Z.R. Lu
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| Abstract | ||
| This study presents the Big Bang and Big Crunch (BB-BC) optimization algorithm for detection of structure damage in large severity. Local damage is represented by a perturbation in the elemental stiffness parameter of the structural finite element model. A nonlinear objective function is established by minimizing the discrepancies between the measured and calculated acceleration responses (AR) of the structure. The BB-BC algorithm is utilized to solve the objective function, which can localize the damage position and obtain the severity of the damage efficiently. Numerical simulations have been conducted to identify both single and multiple structural damages for beam, plate and European Space Agency Structures. The present approach gives accurate identification results with artificial measurement noise. | ||
| Key Words | ||
| damage detection; time domain; BB-BC algorithm; optimization | ||
| Address | ||
| J.L. Huang and Z.R. Lu : Department of Applied Mechanics, Sun Yat-sen University, Guangzhou, Guangdong Province, 510006, P.R. China | ||