太原理工大学学报2024，Vol.55Issue(4)：619-628,10.DOI:10.16355/j.tyut.1007-9432.20230603
考虑轮轴过盈配合的地铁车轮踏面制动温度场和应力场研究
Study on Braking Temperature and Stress Fields of Metro Wheel Tread Considering Wheel-Axle Interference Fit
摘要
Abstract
[Purposes]The stress on the metro wheel is complicated,which is not only influ-enced by the wheel-rail coupling force and the contact pressure induced by the axle-wheel interfer-ence fit,but also by the thermal load generated during braking.[Methods]In this paper,a metro wheel with single S-type spoke plate is taken as the research object.The finite element model of the wheel is established in ABAQUS software and the influence of the axle-wheel interference fit is analyzed on the mechanical stress distribution of the wheel under the straight-line load condi-tion.The thermal-mechanical coupling model of the wheel is established at tread braking under the turnout load condition.The direct coupling method is used to study the variation of the tem-perature and stress fields of the wheel.Effects of mechanical stress and thermal-mechanical cou-pling stress on the structural strength of the wheel under different wear levels are studied.[Find-ings]Results show that the thermal load mainly affects the structure near the tread,while the part near the hub is greatly affected by the interference fit.The maximum difference of coupling stress between the new wheel and the worn-to-limit wheel is up to 69.3 MPa.The coupling stress of the wheel is relatively stable within the diameter range of 820-840 mm,with a float of only 9.1 MPa.[Conclusion]This study provides scientific reference for the structural design of metro wheels and can give a good guidance for the maintenance work.关键词
地铁车轮/热力耦合/过盈配合/磨耗车轮/温度场/应力场Key words
metro wheel/thermal-mechanical coupling/interference fit/worn wheel/temper-ature field/stress field分类
交通工程引用本文复制引用
孙小娟,李扬辉,江连运,柴轲,倪超..考虑轮轴过盈配合的地铁车轮踏面制动温度场和应力场研究[J].太原理工大学学报,2024,55(4):619-628,10.基金项目
国家自然科学基金青年项目(52202478) （52202478）
山西省青年科学研究项目(20210302124698) （20210302124698）
