三种车辆振动分析模型对比

Comparison of Three Vehicle Vibration Models

文章基于1/4车辆模型和1/2车辆模型,给出了一种5自由度模型的运动方程,对3种模型进行了仿真建模,并对结果进行了比对,分析了差异原因。结果表明:1/2车辆模型和5自由度模型的优势在于考虑了簧载质量的俯仰运动以及质心位置对垂向运动加速度的影响,另外5自由度模型可以体现动力总成对簧载质量振动的影响。

Based on the 1/4 vehicle model and the 1/2 vehicle model,a motion equation of a 5-degree-of-freedom model is given.The three models are simulated and modeled,the results are compared,and the reasons for the differences are analyzed.The results show that the advantage of the 1/2 vehicle model and the 5-degree-of-freedom model is that the pitch motion of the sprung mass and the influence of the center of mass position on the vertical motion acceleration are considered.In addition,the 5-degree-of-freedom model can reflect the vibration of the sprung mass by the powertrain impact.