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Optimum design of truss structures under frequency constraints using hybrid CSS-MBLS algorithm
Shahin Jalili,Siamak Talatahari 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.5
Optimum design of truss structures under frequency constraints is a complicated highly non-linear optimization problem with nonconvexsolution space. In this paper, a hybrid Charged System Search (CSS) algorithm with Migration-based Local Search (MBLS)is proposed for resolving this problem. The CSS algorithm as a developed metaheuristic optimization algorithm is inspired by thegoverning laws of electrostatics in physics and the governing laws of motion from the Newtonian mechanics. In the proposed hybridCSS-MBLS algorithm, the convergence speed of the standard CSS algorithm is enhanced by the MBLS mechanism. Numericalresults obtained from some design examples reveal the successfulness and effectiveness of the proposed algorithm in solving trussoptimum design problem under frequency constraints.