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An Efficient Optimal Design Method for Dampers(PDF)


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An Efficient Optimal Design Method for Dampers
LI Gang ZHAI Zi-jie YU Ding-hao
State Key Laboratory of Costal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
energy dissipation structure inelasticity-separated finite element method damper optimal design genetic algorithm
Based on inelasticity-separated finite element method(IS-FEM)and the improvement of genetic algorithm based on population feasibility, an efficient optimal design method for dampers was proposed. Firstly, based on the basic idea of IS-FEM, the isolation nonlinear control equations of structure equipped with displacement-based dampers and velocity-based dampers were derived respectively. Then, the constrained optimization genetic algorithm based on population feasibility was adopted and the population initialization method, crossover, mutation and selection operators were modified to improve the searching ability near feasible region boundary. Finally, a steel structure retrofit project with metallic yielding dampers was taken as example to verify the accuracy and efficiency of the proposed method. The results show that the new method expands the application range of IS-FEM, improves the search ability of genetic algorithm near the boundary of feasible region, and improves the calculation efficiency in design. The proposed method is an efficient optimization design method of damper.


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Last Update: 2020-10-15