摘要
铁路车辆不仅应具有良好的高速运行平稳性,而且还应有优秀的曲线通过能力。针对大轴距铁路工程车辆普遍存在的曲线通过性能较差现象,以某型铁路施工的专用电动平车为例,并利用多体动力学软件SIMPACK建立车/轨耦合动力学模型,计算在牵引工况下通过300m半径曲线,自行工况下通过小半径曲线和12号道岔时的动力学性能,分析平车的曲线通过性能。计算结果表明:牵引工况下通过R300曲线时粘着系数随速度的增大而减少,蠕滑力同步增大,导致轮轨磨耗加剧;自行工况下前后两个轮对轮轴受方向相反的同步横向冲击。
Rail vehicles should not only have good high-speed running performance but also have excellent curve passing performance. Since the curving performance of railway vehicles with large wheelbase is poor. Takes a certain type of railway construction of special electric fiat car for example. And establishes the vehicle/track coupling dynamics model with multibody dynamics software SIMPACK. Analyzes the curve passing dynamic pegCormance of the flatcar under traction conditions and self condition. The results showe that the adhesion coefficient decreases with the increasement of the speed while passing 300m curve under traction conditions. The creepforce synchronous＇ increasement causes the rapid development of wheel/rail wear. The synehronous transverse impacts of the front and rear wheelsets are in the OOoosite direction under self conditions.
出处
《机械设计与制造》
北大核心
2014年第8期140-142,共3页
Machinery Design & Manufacture
基金
国家自然科学基金(51005190)
四川省科技计划项目(2012GZ0103)
铁道部科技研究开发计划(2011J001-B)
关键词
电动平车
动力学性能
小半径曲线
曲线通过性能
道岔
Electric Flatcar
Dynamic Behavior
Sharp Curve
Curve-Passing Performance
Turnout
