车辆侧翻指标与侧翻风险因素分析  

Analysis on rollover index and rollover risk factors of vehicles

作　　者：徐中明[1,2] 于海兴[2] 伍小龙[2] 张志飞[2] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]重庆大学机械工程学院,重庆400044

出　　处：《重庆大学学报（自然科学版）》2013年第3期25-31,共7页Journal of Chongqing University

基　　金：高等学校博士学科点专项科研基金资助项目(2010019111004)

摘　　要：为了明确侧翻预警与防侧翻控制所需的侧翻指标和考察侧翻风险因素的影响程度,利用CarSim建立了SUV车辆的整车非线性动力学模型,基于仿真分析方法进行了鱼钩转向侧翻试验设计,并对试验结果进行了数理统计与分析。仿真试验结果表明:侧翻指标方面,轮胎载荷转移率指标在表征车辆侧翻方面具有较高的可信度;车辆的侧滑甩尾和转向能力与侧翻之间的关系取决于路面的附着情况;所提出的新的侧翻风险度量指标适于车辆复杂输入条件下分析了多个侧翻风险因素对侧翻风险的影响。In order to make clear the rollover index used in rollover warning and anti-rollover control and the influence degree of rollover risk factors,CarSim is used to establish a nonlinear dynamics model for SUVs.Experimental design on fishhook rollover tests based on simulation method is conducted,and the experimental results are analyzed by mathematical statistics methods.The simulation results show that：tire load transfer rate index in the characterization of vehicle rollover has higher reliability;the relations among vehicle skidding,steering ability and rollover mainly depend on the road adhesion situation;the newly proposed rollover risk evaluation index suitable for vehicle complex input conditions is able to analyze the influence of rollover risk factors on rollover risk.

关 键 词：车辆 动态仿真 试验设计 侧翻 侧翻指标 

分 类 号：U461.91[机械工程—车辆工程]