Abstract

Info

Title:: Multi-objective Optimization of Double-layer Spherical Shells Based on Quick Group Search Algorithm

Author(s):: JIN Jing; LI Li-juan; LIU Feng; HE Jia-nian; School of Civil and Transportation Engineering, Guangdong University of Technology

Keywords:: double-layer spherical shell; multi-objective optimization; quick group search algorithm; time history analysis; Pareto frontier

Abstract:: The multi-objective quick group search optimization (MQGSO) algorithm was applied to the optimal design of doublelayer spherical shells. The optimization objectives were the minimum value of the maximum displacement and the weight of the structure. Taking the doublelayer spherical shells as an object, the Pareto frontier of the optimization example structure had the full and broader distribution. Corresponding to the multi-objective optimization results and the singleobjective optimization results, the time history response analysis of optimized structure under multi-dimensional earthquake action was carried out. The results show that the multi-objective optimization results are better than those of the singleobjective one. The dynamic characteristics of the doublelayer shell example prove that the MQGSO algorithm can effectively deal with the multi-objective optimal design of complex spacial structures.