Authors

Abstract

In order to analyze the influence of liquid sloshing on roll stability of the sprayer, the equivalent mechanical model of liquid sloshing was introduced. A multi-degree-of-freedom model of the sprayer was established that includes the effect of liquid sloshing. An E-level road spectrum was constructed based on sinusoid superposition method according to the grade of the field ground unevenness, and the roll stability of the sprayer under these excitations was investigated. The effects of liquid filling ratio and driving speed were analyzed. The results show that the roll angle decreases with the increase of filling ratio at low speed, but the situation is opposite at high speed. The vertical acceleration of the vehicle body decreases to some extent under some situations due to the presence of the liquid. In general, both the roll angle and the vertical acceleration increase with the increase of the driving speed, especially in the case of existing liquid sloshing.

Abstract in Chinese

为分析液体晃动对喷雾机侧倾稳定性的影响，引入液体晃动等效力学模型。建立了包含液体晃动影响的多自由度动力学模型。根据农田地面不平度等级构建了E级路面谱，研究了地面不平激励下喷雾机的侧倾稳定性。分析了充液比和行驶速度的影响。结果表明：侧倾角低速时随液体深度增加而减小，而高速时情况相反。由于液体的存在，车身垂向加速度在某种情形下有所减小。总体来看，侧倾角和垂向加速度都随行驶速度增加而增大，存在液体晃动时更加显著。