摘要
为提高精密卧式加工中心立柱的综合性能,采用拓扑优化与多目标参数优化相结合的系统优化方法对立柱进行分析及优化。利用ANSYS计算并分析了原始立柱的质量和静、动态性能。以立柱的刚度最大为目标,采用拓扑优化技术研究立柱的载荷传递路径。基于拓扑优化结果,分别以立柱的最大振幅和质量最小为优化目标,以立柱的最大静应力和最大静变形及质量不大于原始立柱相关参数为约束,对立柱进行多目标参数优化设计,确定了最佳结构和最佳参数的立柱。其与优化前相比:质量降低6.1%、静刚度和强度提高10%以上、各轴的最大振幅分别减小29.5%、26.7%、9.2%、最小动刚度分别提高43.5%、36.8%和8.8%。
In order to improve the comprehensive performance of the precision horizontal machining center,the optimization method combining topological optimization and multi-objective parameter optimization was used to analyze and optimize the precision horizontal machining center. The quality,static and dynamic performance of the original column were calculated and analyzed by using ANSYS software. The load transfer path of the column was studied by using topological optimization technique. Based on the results of topology optimization,the maximum amplitude and the minimum mass of the column were taken as the optimization objectives. Taking the maximum static stress,maximum static deformation and mass less than the parameters related to the prototype column as constraints,the multi-objective parameter optimization design was carried out for the column. The optimum structure and optimum parameters of the column was determined. Compared with the column without optimization,its mass decreases by 6. 1%,static stiffness and strength increases by more than 10%,and the maximum amplitude of each shaft decreases by 29. 5%,26. 7%, 9. 2%,and the minimum dynamic stiffness increases by 43. 5%,36. 8% and 8. 8%,respectively.
作者
陈宇
朱守琴
CHEN Yu;ZHU Shouqin(Chaohu University,Chaohu Anhui 238000,China)
出处
《机械设计与研究》
CSCD
北大核心
2019年第4期140-143,154,共5页
Machine Design And Research
基金
国家自然科学基金资助项目(51375219)
安徽省教育厅重大资助项目(KJ2018ZD045)
关键词
精密卧式加工中心
立柱
静动态性能
轻量化
拓扑优化
参数优化
Precision horizontal machining center
Column
Static and dynamic performance
Lightweight
Topology optimization
Parameter optimization
作者简介
陈宇(1991-),男,硕士,助教;主要研究方向:先进制造系统与技术等方面,已发表论文5篇,E-mail:cy3059555@163.com.
