摘要
以三轴转向架构架为研究对象,对其进行了结构强度与关键焊缝疲劳寿命可靠性分析,在此基础上以主要壁板厚度为变量,考虑强度和疲劳寿命可靠度约束建立转向架构架抗疲劳轻量化模型,并采用缩小空间响应面近似优化法进行求解。优化后构架减重约4.3%,将不确定性因素考虑进结构优化过程中,优化结果更加合理。
The three-axle bogie frame was taken as the research object,the reliability analysis for structural strength and fatigue life of the key welds were carried out.Based on the thickness variables of key plates,the anti-fatigue lightweight model for the bogie frame was proposed with strength and fatigue life constraints.This optimization model was solved by the reduced response surface method.The optimization results showed that the total mass was reduced by 4.3%.This optimization result was more reasonable by consideration of uncertainties,which provided a reference for structure optimization.
作者
韩新利
高月华
HAN Xinli;GAO Yuehua(College of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian,Liaoning 116028,China;School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University,Nanchang,Jiangxi 330063,China)
出处
《机车电传动》
北大核心
2021年第3期152-156,共5页
Electric Drive for Locomotives
基金
大连高层次人才创新支撑计划项目(2015R075)。
关键词
转向架构架
疲劳寿命
可靠性分析
响应面法
结构优化
有限元分析
bogie frame
fatigue life
reliability analysis
response surface methodology
structure optimization
FEA
