张洪信, 张铁柱, 陈秉聪, 刘大维. 车辆纵振路面谱及其应用[J]. 力学与实践, 2006, 28(2). DOI: 10.6052/1000-0992-2004-394
引用本文: 张洪信, 张铁柱, 陈秉聪, 刘大维. 车辆纵振路面谱及其应用[J]. 力学与实践, 2006, 28(2). DOI: 10.6052/1000-0992-2004-394
VEHICLE LONGITUDINAL-VIBRATION ROAD SPECTRUM AND ITS APPLICATION[J]. MECHANICS IN ENGINEERING, 2006, 28(2). DOI: 10.6052/1000-0992-2004-394
Citation: VEHICLE LONGITUDINAL-VIBRATION ROAD SPECTRUM AND ITS APPLICATION[J]. MECHANICS IN ENGINEERING, 2006, 28(2). DOI: 10.6052/1000-0992-2004-394

车辆纵振路面谱及其应用

VEHICLE LONGITUDINAL-VIBRATION ROAD SPECTRUM AND ITS APPLICATION

  • 摘要: 对车辆纵振路面谱及其在地面-车辆系统中的应用进行了探讨,计算了行车纵剪力及其作用下的路面应力强度因子. 与垂向路面谱相比,纵振路面谱代表的路面等级较高. 行车纵剪力为均值等于0的平稳随机过程,在它的作用下,路面荷载型裂纹从上到下扩展的速度明显大于从下往上扩展的速度,扩展速度与力的4次幂成正比. 行车纵剪力对路面的裂纹损伤远远大于轮胎路面压力导致的裂纹损伤

     

    Abstract: Vehicle longitudinal-vibration road spectrum and itsapplication in a road-vehicle system are discussed. The vehicle longitudinalshearing force and the stress intensity factor of the pavement under the forceare computed. Compared with the vertical road spectrum, the roadlevel of the longitudinal road spectrum is better. The vehiclelongitudinal shearing force is represented bya steady stochastic process whose mean value is zero. The pavement crackgrowth speed from upper to lower is evidently faster than fromlower to upper. The speed is proportional to the fourth power of the vehiclelongitudinal shearing force, by which, the pavement damage is by fargreater than the vertical tyre force.

     

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