摘要
轴桥作为轻轨列车关键承载部件之一,其结构强度直接影响着列车的运行安全。以某轻轨用独立轮轴桥为研究对象,对其进行参数化建模,分析轴桥在各载荷工况下的受力和变形情况。选取最大等效应力和变形为目标函数,结构几何尺寸为变量,基于响应面的试验拟合法,通过拉定超立方抽样抽取一定数量的样本点进行参数灵敏度分析。结果表明,在所选择的参数变量中,轴头宽度和翼板厚度对轴桥的变形与应力影响较灵敏。计算结果可为轴桥结构优化设计提供参考。
The axle-bridge is one of the key bearing components of the light rail train whose structural strength directly affects the safety of the train.The independent axle-bridge for a certain light rail train as the research object,was parametrically modeled to analyze the stress and deformation of the axle-bridge under different load conditions.The maximum equivalent stress and deformation was chosen as the objective function and the structure geometry size as a variable.Based on the response surface method (RSM),Latin hypercube sampling (LHS) was used to select a certain number of sample points for parameter sensitivity analysis.The results showed that the breath of axle head and thickness of flange significantly influenced deformation,as well as stress,in the selected parameters,providing a reference for the axle-bridge optimization design.
作者
刘剑歌
刘强
黄坤兰
范力中
王杰
LIU Jiange;LIU Qiang;HUANG Kunlan;FAN Lizhong;WANG Jie(School of Mechanical Engineering,Sichuan University,Chengdu,Sichuan 610065,China;Sichuan Lihai Casting Industry Co.,Ltd.,Neijiang,Sichuan 641200,China;Sichuan Haoyu City Rail Technology Co.,Ltd.,Neijiang,Sichuan 641200,China)
出处
《机车电传动》
北大核心
2019年第6期122-125,共4页
Electric Drive for Locomotives
基金
四川省科技厅资助项目(2017GZ0084)
2017年内江市科技孵化和成果转化专项资金项目(2017KJFH0013)
关键词
轻轨列车
轴桥
灵敏度分析
优化设计
可靠性
响应面法
有限元分析
light rail train
axle-bridge
analysis of sensitivity
optimization design
reliability
response surface method
FEA
