基于遗传算法-响应曲面方法的激光透射焊接聚碳酸酯工艺的多目标优化

采用旋转中心复合设计进行激光透射焊接热塑性聚合物的试验规划,运用响应曲面法建立焊接工艺参数和焊接强度、焊缝宽度的关系模型,采用满意度函数和遗传算法相结合,对焊接强度、焊缝宽度和焊接成本进行了多目标优化及优化结果的验证。结果表明,优化的预测结果和实验结果取得了较好的一致性,可以为提高焊接质量和降低生产成本提供有效的指导。

Multi-Objective Optimization of Laser Transmission Welding of Polycarbonate Process Based on Genetic Algorithm-Response Suface Methodology

A central composite rotatable experimental design is used to plan the experiment of laser transmission welding of polymers. Response surface methodology (RSM) is employed to establish the mathematical models of relations between the welding process parameters and the weld strength as well as weld seam width, and then the desirability function coupled with genetic algorithm is used to carry out the multi-objective optimization of the weld strength, weld width and weld cost. It demonstrates that the predicted results of the optimization are in good agreement with the experimental results, so this study provides an effective direction to enhance the weld quality and minimize the weld cost.