【摘要】 针对某SUV样车满载稳态回转试验中出现的过度转向趋势问题,应用MSC.ADAMS/CAR软件,建立了该车的虚拟样车模型,对稳态回转特性进行了虚拟样车试验及验证。探讨了影响车辆稳态回转特性的结构参数,提出了加粗前悬架横向稳定杆,调整前后悬架侧倾角刚度匹配的方法,并在虚拟样车上进行了多种匹配的对比分析。由分析结果得知:前后悬架侧倾角刚度比值从1.2增加到1.8时,过度转向趋势得以消除,并具有适度的不足转向特性。在改进后的样车上证明了基于上述结论的方案是可行的。更多还原

【Abstract】 Aiming at the oversteering trend of a SUV prototype in the steady circular test with full load,a virtual prototype of the vehicle was built using MSC.ADAMS/CAR software,the virtual steady circular tests were performed and validated with the physical prototype test results.By studying the effect of the construction parameters on the vehicle steady circular response,a version incorporating the thickening the anti-roll bar of the front suspension,regulating the roll rate distribution of front and rear suspension was put forward,and the comparative analysis of different distributions was performed in the virtual prototype.The results show that when the roll rate proportion of front suspension to rear suspension is modified from 1.2 to 1.8,the oversteering trend was eliminated with a tolerable understeering characterstic.The conclusion was used in the physical prototype,and the suggested version is proved feasible by the test results of modified prototype.更多还原