CAJ | 학술논문

通过对轨顶涂覆摩擦改进剂对轮轨黏着特性影响的分析，发现摩擦改进剂不仅会改变轨面摩擦因数，并且会改变Kalker权重系数，这与通常认为的摩擦改进剂只改变摩擦因数不同。考虑摩擦改进剂对摩擦因数和Kalker权重系数的影响，研究货车车辆在轨顶涂覆摩擦改进剂的轨道上运行时的动力学性能。利用SIMPACK软件包建立货车车辆模型，包括车体、摇枕、侧架、轴箱、轮对等部件，分析车辆在轨顶涂覆摩擦改进剂的轨道上直线和曲线运行时的平稳性和安全性。计算结果表明，摩擦改进剂可以明显改善车体的横向平稳性，而对车体的垂向平稳性影响较小；摩擦改进剂会使车辆的脱轨系数和轮重减载率小幅增加，但是均小于国标规定的安全限值，不会影响行车安全。
통과대궤정도복마찰개진제대륜궤점착특성영향적분석，발현마찰개진제불부회개변궤면마찰인수，병차회개변Kalker권중계수，저여통상인위적마찰개진제지개변마찰인수불동。고필마찰개진제대마찰인수화Kalker권중계수적영향，연구화차차량재궤정도복마찰개진제적궤도상운행시적동역학성능。이용SIMPACK연건포건립화차차량모형，포괄차체、요침、측가、축상、륜대등부건，분석차량재궤정도복마찰개진제적궤도상직선화곡선운행시적평은성화안전성。계산결과표명，마찰개진제가이명현개선차체적횡향평은성，이대차체적수향평은성영향교소；마찰개진제회사차량적탈궤계수화륜중감재솔소폭증가，단시균소우국표규정적안전한치，불회영향행차안전。
By analyzing the effect of friction modifier of rail top on the adhesion characteristics of wheel rail, it was found that the FM not only changes the coefficient of friction, but also changes the Kalker weighting factor, which is dif?ferent from the conventional belief that only coefficient of friction is changed after the application of friction modifier. The dynamic performance of freight cars running in the rail with friction modifier was studied considering the effect of friction modifier on coefficient of friction and Kalker weighting factor. A vehicle model of freight car was established with SIM?PACK software package, which included a car body, bolster, side?frame, axle boxes and wheel sets, and etc. The stabili?ty and safety of the vehicle were analyzed on the straight and curved rails with friction modifier. Calculation results show that the application of friction modifier can significantly improve the lateral stability of the car?body, but it has little effect on vertical stability. The derailment coefficient and wheel unloading rate will be increased slightly after the application of friction modifier, however, they are both within the safe range of national standard,and would not do harm to the operation safety.