摘要
弓型座是轮胎模具主要承载零件,多次开合模上部悬臂易出现弯曲变形.为优化弓型座,去除材料冗余,提高其使用寿命,本工作采用变密度法对其进行拓扑优化,并利用疲劳软件分析其寿命.计算得出最大等效应力与疲劳寿命出现位置相同且竖直方向最大位移量未超过设计时最大值;优化修整弓型座体积约减小为原模型的78%,最低疲劳寿命却比原模型高;且随其内表面直角倒角长度增加,最大等效应力不断减小,疲劳寿命不断增加.
The slider is one of the main parts of tire mould.The upper cantilever of the slider is easy to deform after many times of opening and closing of the tire mold.In order to optimize the slider,remove excess materials and improve its service life,this paper adopts variable density method to optimize its topology and analyze its fatigue life with fatigue software.The results show that the maximum equivalent stress is in the same position as the minimum fatigue life and the maximum displacement in the vertical direction does not exceed the design maximum.The volume of the optimized slider was reduced to 78%of the original model and the minimum fatigue life was slightly higher than that of the original model.With the increasing of the right-angle chamfer length of the inner surface,the maximum equivalent stress decreases and the fatigue life increases.
作者
胡海明
李新荣
HU Haiming;LI Xinrong(College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China)
出处
《青岛科技大学学报（自然科学版）》
CAS
2020年第2期97-100,105,共5页
Journal of Qingdao University of Science and Technology:Natural Science Edition
基金
山东省自然科学基金项目(ZR2013EEL101).
关键词
弓型座
拓扑优化
等效应力
位移量
疲劳寿命
slider
topology optimization
equivalent stress
displacement
fatigue life
