双轮辙激励下多轴重型车辆动载特性仿真分析

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (13) : 48-52.

论文

刘祥银，陈洋，高攀，刘大维

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Simulation Analysis of Multiaxial Heavy Vehicle Dynamic Load Characteristics under Bilateral Tracks’ Road Excitation

Liu Xiangyin Chen Yang Gao Pan Liu Dawei

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文章历史 +

摘要

为研究双轮辙激励下多轴重型车辆动载特性，采用有理函数功率谱密度的谐波叠加法模拟双轮辙激励的空间域随机路面，建立刚柔耦合的车辆整车虚拟样机，集成创建一个双轮辙激励的空间域路面车辆行驶动力学模型，仿真计算了车辆各轴两侧轮胎的法向作用力和车轮法向动载系数。结果表明，与单轮辙激励相比，双轮辙激励下得到的车辆各轴两侧车轮法向作用力的大小和变化规律均不相同，而且轮胎法向作用力最大值出现的位置也不同；不同车速下，车辆各轴两侧车轮的法向动载系数大小和变化规律完全不同，车辆前中轴的法向动载系数最小，中后、后轴的法向动载系数最大。研究结果可为精确计算多轴车辆轮胎动载荷，预测路面动态响应提供参考依据。

Abstract

In order to study the dynamic load characteristics of multiaxial heavy vehicle under bilateral tracks’ road excitation，the random road surface in spatial domain was simulated through harmonic superposition method of rational function power spectral density(PSD), and a rigid-flexible coupling virtual prototype vehicle was established. Then a ride dynamic model of multiaxial heavy vehicle under bilateral tracks’ spatial domain road excitation was established, and the vehicle tire normal force and tire normal dynamic load coefficient were computed. Simulation results indicated that, comparing with the single tracks’ road excitation, the value and change law of normal forces on the both sides of each axle’s tires under bilateral tracks’ road excitation were not the same, and maximum value of tire normal force appeared in a different location; The value and change law of normal dynamic load coefficient of each axies’s tires were completely different in different driving speeds，the front-mid axles’ tire normal dynamic load coefficient was minimum, the mid-rear and rear axles’ tire normal dynamic load coefficients were maximum. The research results could provide the basis for the calculation of vehicle tire dynamic load and verification of dynamic response of road surface.

导出引用

刘祥银，陈洋，高攀，刘大维. 双轮辙激励下多轴重型车辆动载特性仿真分析[J]. 振动与冲击, 2015, 34(13): 48-52

Liu Xiangyin Chen Yang Gao Pan Liu Dawei. Simulation Analysis of Multiaxial Heavy Vehicle Dynamic Load Characteristics under Bilateral Tracks’ Road Excitation[J]. Journal of Vibration and Shock, 2015, 34(13): 48-52

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