某越野车辆平顺性仿真分析及综合评价

针对某4×4越野车辆的平顺性,参照随机路面输入评价与脉冲路面输入评价两种方法及指标进行研究.首先针对国内外现有的平顺性评价方法进行了总结回顾,并依据实际车辆的性能要求,设计了适合该类车型的分析工况、仿真方法和综合评价指标.并针对该越野车型搭建了整车多体动力学模型,进行了平顺性仿真及综合评价,获得的评价指标包括车辆在不同等级路面上的越野平均车速和车辆经过不同高度凸块的允许最高车速.仿真结果表明该车辆满足所定义的平顺性开发目标.

Ride Comfort Simulation and Integrated Evaluation for a Off-Road Vehicle

The ride comfort of a 4×4 off-road vehicle was analyzed according to the ride evaluation quality and method both under random road and impulse inputs. Firstly, the existing evaluation methods were reviewed. According to the quality requirement of the actual off-road vehicles, the analysis procedure, simulation method and integrated evaluation criterions were developed. Then, a multi-rigid-body dynamic vehicle model was established with software Adams. Finally, the ride comfort simulation and integrated evaluation were carried out, getting the evaluation indicators including the "Cross-country average velocity" under random road with different level, and the "Limited velocity" allowing to pass the obstacle with different heights. The simulation results show that the ride comfort quality of this vehicle can achieve the design requirements.