结合熵权TOPSIS的FDM成型工艺参数多目标优化研究

发布时间：2018-04-23 04:16

本文选题：熔融沉积成型 + 正交试验　；参考：《机械科学与技术》2017年11期

【摘要】：针对熔融沉积成型试件的长度偏差率、宽度偏差率、孔隙率这3个目标,选择挤出速度(A)、填充速度(B)、分层厚度(C)和填充方式(D)作为控制因子,通过正交试验确定了各控制因子及因子间交互作用对单个目标的影响程度,并基于熵权TOPSIS模型对试验结果进行综合评价,以相对贴近度作为综合工艺目标,结合极差分析和方差分析,确定了各控制因子及因子间交互作用对综合工艺目标的影响程度,得出了最佳工艺参数组合方案,同时对优化方案进行了试验验证。结果表明,填充方式、填充速度以及挤出速度与填充速度的交互作用对综合工艺目标有较强的影响,最优工艺参数组合方案为A1B3C1D1,且优化方案在综合工艺目标上提升了2.25%。
[Abstract]:In view of the three targets of length deviation rate, width deviation rate and porosity of melt deposition forming specimen, the extrusion rate (An), filling speed (BX), delamination thickness (C) and filling mode (D) were selected as control factors. The influence degree of each control factor and its interaction on a single target is determined by orthogonal test. The experimental results are evaluated synthetically based on entropy weight TOPSIS model, and the relative closeness degree is taken as the comprehensive process target. Based on the range analysis and variance analysis, the influence degree of each control factor and the interaction between the factors on the integrated process target is determined, the optimal process parameter combination scheme is obtained, and the optimization scheme is tested and verified. The results show that the interaction of filling mode, filling speed, extrusion speed and filling speed has a strong influence on the integrated process target. The optimal process parameter combination scheme is A1B3C1D1, and the optimized scheme improves 2.25% in the integrated process target.
【作者单位】：南京理工大学机械工程学院;
【分类号】：TH16

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