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利用JD-1轮轨模拟试验机研究新与旧模拟轮、新与生锈模拟轮和冲角等参数对轮轨黏着系数的影响。结果表明:干态和有水工况下,随着冲角的增加,轮轨纵向黏着系数均有所下降,而横向黏着系数均呈现上升趋势。对比干态和有水工况,发现有水下工况纵向黏着系数下降较多,下降了50%~60%,但横向黏着系数下降不明显。新模拟轮与模拟轨转动产生的黏着系数要小于旧的模拟轮与模拟轨转动产生的黏着系数;新模拟轮与模拟轨转动产生的黏着系数与生锈的模拟轮与模拟轨转动产生的黏着系数相差无几。
The effects of the new and old simulated wheels, the new and the rusty simulated wheels and the angle of attack on the wheel-rail adhesion coefficient were studied by using the JD-1 wheel-rail simulation test machine. The results show that with the increase of the angle of attack, the longitudinal adhesion coefficient of wheel and rail decreases, while the horizontal adhesion coefficient shows an upward trend under dry and water conditions. Compared with dry and water conditions, it was found that there was a significant decrease in longitudinal adhesion coefficient under water conditions, which dropped by 50% -60%, but the horizontal adhesion coefficient did not decrease obviously. The adhesion coefficient generated by the rotation of the new simulation wheel and the analogue rail is smaller than the adhesion coefficient produced by the rotation of the old simulation wheel and the analogue rail. The adhesion coefficient produced by the rotation of the new simulation wheel and the simulation rail and the adhesion generated by the rotation of the simulated wheel and the simulation rail, The coefficient is almost the same.