不平软路面对车轮激励的机理

THE PRINCIPLE OF ROUGH TERRAIN EXCITATION ACTING ON VEHICLE WHEELS

硬路面的路面谱与软路面的路面谱是不同的。测取的软路面谱中,当软路面松软时,车轮轮胎气压越高,其有效路面谱幅值越小,本文分析说明了这一现象的原因。

Road spectrum and soft terrain spectrum are different. In the measured spectrum on rough soft terrain, the higher the tyre pressure is, the less the amplitude of the effective spectrum is. The reasons are explained by this paper. They are:1. With higher tyre pressure, the tyre is excited by terrain roughness through changing the bearing force of the front failure zone because this zone is larger and this force is less affected by the terrain roughness so that the amplitude is less; 2. With lower tyre pressure, the contacting area is easily affected by the terrain roughness, so the tyre is easily excited and the amplitude is larger.