五轴转向重型汽车转向性能的研究

A Study on Steering Performance of Five-axle Heavy-duty Vehicle

以多体系统动力学理论为基础,利用ADAMS建立了五轴转向重型汽车的整车虚拟样机模型,对该模型进行了仿真分析。由分析结果可知,转向轮转角越大,轮胎磨损越严重。为提高重型汽车的灵活性,延长轮胎的使用寿命,对该模型进行了优化。通过仿真分析可知,优化后的转向性能明显提高。同时分析比较了五轴转向重型汽车与前两轴转向重型汽车的转向性能,结果表明,五轴转向重型汽车转弯半径小,轮胎磨损小。

On the basis of multi-body system dynamics theory and using ADAMS/View, a virtual prototype model for five-axle heavy-duty vehicle is established with its steering performance analyzed. The results show that the bigger the steering wheel angle is, the more seriously the tires wear. In order to improve the maneuverability of vehicle and extend the service life of tires, the model is optimized with its steering performance enhanced. In addition, a comparative analysis between all-axle steering and two-front-axle steering is conducted, which shows that the turning diameter is smaller and tire wear is less with five-axle steering.