关键词: 壁板；挤压；响应面法；遗传算法；模拟退火算法

Abstract:

Considering the oversize extrusion force and product defects in the extrusion forming process of aluminum alloy flat-plate, multi-objective optimization design was presented for 6063 aluminum alloy flat-plate. Firstly, the orthogonal experimental design and response surface design were combined together to build the second order response surface model between the forming parameters and evaluating indicators. Then, using genetic algorithm, simulated annealing algorithm and the optimized reserved strategy，the genetic simulated annealing program was developed to optimize this model. From which, the 24 evenly distributed Pareto-optimal solutions were obtained. In the last, defining a satisfactory degree function, the satisfactory solution was selected. Meanwhile, in order to verify the rationality of optimization result, the simulation verification were carried out, the results show that simulation results are in accord with optimal ones.

Key words: flat-plat, extrusion, response surface method, genetic algorithm, simulated annealing algorithm