Influence of transition curves on dynamics performance of railway vehicle
Article Text (Baidu Translation)
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摘要: 分析了车辆在缓和曲线上的受力情况, 利用动力学仿真软件SIMPACK对转向架为ZK6的25t载货车辆通过3次抛物线型、4-3-4型、5次型缓和曲线时的动力学性能进行了仿真计算, 并与理论分析结果进行对比。对比结果表明: 缓和曲线线型对车辆动力学性能的影响较大, 特别是在连接点处; 3次抛物线型缓和曲线连接点处的动力学性能相对4-3-4型与5次型较差, 车体垂向加速度最大相差达到83%, 其他指标相差也在10%左右; 4-3-4型相对于5次型只是在缓和曲线上的分段点处的车体垂向加速度相差63%, 而其他动力学性能指标相差均在2%以内; 4-3-4型和5次型要体现其优势则需要增加其长度。Abstract: The action forces of vehicle on transition curves were analyzed.The calculated dynamics performances of heavy haul wagon with 25 t axle load were analyzed by using dynamics simulation software SIMPACK while passing through cubic parabola type, 4-3-4 type and quintic type transition curves.The calculated result was compared with the theoretical analysis one.The result indicates that the types of transition curves have great effect on the dynamics performance of vehicle, especially at connection point.Compared with 4-3-4 type and quintic type, the dynamic performance of vehicle at connection point is worse while running on quintic type transition curve, the differences of carbody vertical accelerations reach 83%, and the differences of other indexes are about 10%.The difference of carbody vertical accelerations between 4-3-4 type and quintic type is 63%, and the differences of other indexes are less than 2%.4-3-4 type and quintic type transition curves will have more advantages if the curves are prolonged.
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Key words:
- railway engineering /
- transition curve /
- dynamics performance of vehicle /
- simulation
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