基于加权欧式距离法剥线机刀架多目标拓扑优化设计
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摘要
基于加权欧式距离法将护套线剥线机主传动机构刀架进行多目标拓扑优化设计,建立了静态多刚度拓扑优化数学模型、模态固有频率拓扑优化数学模型和刀架多目标拓扑优化数学模型,通过有限元法对主传动机构刀架进行了优化改进,改进后其质量减少了约14.3%,提高了一阶固有频率和刀架静刚度,优化效果明显.
Tool holder is one of the important parts of sheath stripper connecting tool and main transmission mechanism.Based on weighted Euclidean distance method,the tool holder of main transmission mechanism of sheath stripper is optimized by multi-objective topology.The mathematical models of static multi-stiffness topology optimization, modal natural frequency topology optimization and multi-objective extension of tool holder are established.The mathematic model of flutter optimization is optimized and improved by finite element method.After the improvement, the quality of the tool holder of the main transmission mechanism is reduced by about 14.3%, the first natural frequency and the static stiffness of the tool holder are increased, and the optimization effect is obvious.
Tool holder is one of the important parts of sheath stripper connecting tool and main transmission mechanism.Based on weighted Euclidean distance method,the tool holder of main transmission mechanism of sheath stripper is optimized by multi-objective topology.The mathematical models of static multi-stiffness topology optimization, modal natural frequency topology optimization and multi-objective extension of tool holder are established.The mathematic model of flutter optimization is optimized and improved by finite element method.After the improvement, the quality of the tool holder of the main transmission mechanism is reduced by about 14.3%, the first natural frequency and the static stiffness of the tool holder are increased, and the optimization effect is obvious.
引文
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[3] 丁国龙,高博,明廷伯,等.大型静压回转工作台的模态分析与优化设计[J].机床与液压,2018,46(19):67-71.
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[5] 罗黎,孙蓓蓓,周易达.数控转塔冲床横梁结构多目标拓扑优化设计[J].制造技术与机床,2015(7):93-97.
[6] 周艳华,谢福贵,刘辛军.伺服冲床主传动机构构型及运动学优化设计[J].机械工程学报,2015,51(11):1-7.
[7] 戎飞,刘胜.货车车架多目标拓扑优化[J].机械制造,2018,56(3):20-23.
[8] BENDSOE M P,SIGMUND O.Topology optimization:theory,methods and applications[M].Berlin:Springer,2003.
[9] 陈磊,胡平,张云文,等.轮毂结构多目标拓扑优化设计[C]//中国航空学会.2017年(第三届)中国航空科学技术大会论文集(上册).北京:中国科技技术出版社,2017:83-89.
[10] RAO S S.FREEIHEIT T I.A Modified Game Theory Approach to Multiobjective Optimization[J].Journal of Mechanical Design,1991,113(3):286-291.
[11] ZBIGNIWE,SEKULSKI.Multi-objective topology and size optimization of high-speed vehicle-passenger catamaran structure by genetic algorithm[J].Marine Structures,2010,23(4):405-433.
[12] 王镇江,何造,林广谊,等.汽车塑料保险杠蒙皮多目标拓扑优化[J].塑性工程学报,2018,25(1):269-275.
[13] 张霞,康鹏桂,周克媛,等.火车车轮喷砂机自动夹持器圆柱凸轮有限元模态分析[J].工业仪表与自动化装置,2016(3):90-92.
[14] 徐扬东,张皓文,刘枫,等.基于ANSYS的椭圆跑步机机架静力学及模态分析[J].机械工程与自动化,2018(5):62-64.
[15] 郝雪弟,张艺萱,刘冰,等.基于有限元方法的深井提升机制动系统模态分析[J].煤炭工程,2018,50(10):88-91.