| 车辆纵振路面谱及其应用 |
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| 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):37-41. |
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| 作者姓名： | 张洪信 张铁柱 陈秉聪 刘大维 |
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| 作者单位： | 青岛大学车辆电子技术研究所,青岛,266071 |
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| 基金项目： | 山东省自然科学基金项目(Y99Q11)资助 |
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| 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．
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| 关 键 词： | 剪力 路面谱 裂纹 应力强度因子 |
| 收稿时间： | 2004-10-28 |
| 修稿时间： | 2005-12-27 |
VEHICLE LONGITUDINAL-VIBRATION ROAD SPECTRUM AND ITS APPLICATION |
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| ZHANG Hongxin,ZHANG Tiezhu,CHEN Bingcong,LIU Dawei.VEHICLE LONGITUDINAL-VIBRATION ROAD SPECTRUM AND ITS APPLICATION[J].Mechanics and Engineering,2006,28(2):37-41. |
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| Authors: | ZHANG Hongxin ZHANG Tiezhu CHEN Bingcong LIU Dawei |
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| Abstract: | Vehicle longitudinal-vibration road spectrum and its application in a road-vehicle system are discussed. The vehicle longitudinal shearing force and the stress intensity factor of the pavement under the force are computed. Compared with the vertical road spectrum, the road level of the longitudinal road spectrum is better. The vehicle longitudinal shearing force is represented by a steady stochastic process whose mean value is zero. The pavement crack growth speed from upper to lower is evidently faster than from lower to upper. The speed is proportional to the fourth power of the vehicle longitudinal shearing force, by which, the pavement damage is by far greater than the vertical tyre force. |
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| Keywords: | shear force road spectrum crack stress intensity factor |
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