Lateral stability behaviors of railway passenger car system with elasto-damper coupled wheelset
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摘要: 首次将弹性阻尼耦合轮对应用到客车系统中, 并采用特征值法对该系统横向稳定性进行了分析。指出将弹性阻尼耦合轮对模型的扭转刚度和扭转阻尼分别取不同的值, 可与阻尼耦合轮对、扭转弹性轮对以及独立轮对模型统一。研究结果表明, 采用弹性阻尼耦合轮对模型, 选取适当的扭转阻尼和扭转刚度, 可以提高车辆蛇行临界速度。Abstract: In this paper, the Elasto Damper Coupled Wheelset (EDCW) model is introduced in the passenger car system whose lateral stability behaviors are analyzed by eigenvalue method. According to choose variable parameters, the EDCW model can become identical with damper coupling wheelset, torsionally flexible wheelset and independently rotating wheelset. The effective result indicates that proper coupler torsional stiffness value and coupler torsional damper value can improve the vehicle critical speed.
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图 3 EDCW特征根轨迹
Figure 3. Eigenvalue loci for EDCW with coupler parameters KAX=1.0×1010N·m/rad, CAX=0.0
图 7 车辆蛇行临界速度随扭转阻尼的变化情况
Figure 7. Vehicle critical speed boundary with variation in wheelset tortional stiffness
图 8 车辆蛇行临界速度随扭转阻尼的变化情况
Figure 8. Vehicle critical speed boundary with variation in wheelset tortional damper
图 9 轮对踏面等效锥度对车辆蛇行临界速度的影响
Figure 9. The effect of wheel conicity on critical speed with variation in wheelset tortional stiffness
图 10 蠕滑系数对车辆蛇行临界速度的影响
Figure 10. The effect of creep coefficient on critical speed with variation in wheelset tortional stiffness
图 11 轮对踏面等效锥度对车辆蛇行临界速度的影响
Figure 11. The effect of wheel conicity on critical speed with variation in wheelset tortional damper
图 12 蠕滑系数对车辆蛇行临界速度的影响
Figure 12. The effect of creep coefficient on critical speed with variation in wheelset tortional damper
图 13 轮对纵向刚度对车辆蛇行临界速度的影响
Figure 13. The effect of primary longitudinal stiffness on critical speed with variation in wheelset tortional damper
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