CAJ | 학술논문

目前动车组轮广泛采用的经济型镟修法，镟修后车轮并没有达到标准车轮轮缘厚度。为探究经济镟修型面对轮轨匹配性能产生的影响，为车轮维修策略的制定提供理论依据，对比分析标准车轮型面和新镟修的不同轮缘厚度车轮型面的静态匹配特性与动力学性能。结果表明：目前镟修方法得到的薄轮缘镟修型面有利于提高车辆的直线运行临界速度，但其他动力学性能指标略有下降；在通过不同半径曲线时，各型面曲线通过性能相差不大，小半径曲线工况下，各型面轮缘均与钢轨贴靠；通过大半径曲线时，在较大横移激扰下薄轮缘型面存在失稳的风险，从而造成较大的轮轨横移量及轮轴横向力，使轮缘与钢轨贴靠现象严重，造成严重的轮缘磨耗。
목전동차조륜엄범채용적경제형선수법，선수후차륜병몰유체도표준차륜륜연후도。위탐구경제선수형면대륜궤필배성능산생적영향，위차륜유수책략적제정제공이론의거，대비분석표준차륜형면화신선수적불동륜연후도차륜형면적정태필배특성여동역학성능。결과표명：목전선수방법득도적박륜연선수형면유리우제고차량적직선운행림계속도，단기타동역학성능지표략유하강；재통과불동반경곡선시，각형면곡선통과성능상차불대，소반경곡선공황하，각형면륜연균여강궤첩고；통과대반경곡선시，재교대횡이격우하박륜연형면존재실은적풍험，종이조성교대적륜궤횡이량급륜축횡향력，사륜연여강궤첩고현상엄중，조성엄중적륜연마모。
At present the wheels’ economical re?profiling methods were widely adopted. But the flange thickness after re?profiling was not returned to the standard thickness.In order to explore the influence of wheel re?profiling on wheel?rail matching performance,and to provide a theoretical basis for the establishment of wheel re?profiling strategy,the static matc?hing performance and dynamic performance of new re?profiling profiles with different thickness were compared and ana?lyzed with that of standard wheels.Results show that under the current re?profiling methods,the thin rim profile is helpful to improve the critical speed of vehicle linear running,while other dynamic performance index fall slightly.Curve passing per?formance of wheels with different thickness of profiles is almost the same under different radius curve.Under the condition of small radius curve,the flange of all the profiles is contacted with the rail.When passing through the large radius curves, the thin flange profile has the risk of instability under a larger excitation of lateral displacement,which will cause larger wheel/rail lateral displacement and axle lateral force and result in the serious wear of flange.