CAJ | 학술논문

以某微型客车为参考原型，利用Matlab／simulink软件建立三自由度动力学模型，在此基础上进行车辆急转弯过程中侧翻稳定性虚拟试验研究。通过 J‐turn试验和鱼钩试验（fish‐hook ），分析了车速、转向盘转角对车辆侧向加速度、车身侧倾角等运动姿态的影响，进行车辆转弯过程中的防侧翻稳定性研究。同时以车辆质心位置、轴荷分配、行驶速度、转向盘转角等为主要参数，分析车辆结构及运行参数对微型客车侧翻倾向性的影响。结果表明，车辆质心高度对侧翻倾向性影响最为明显，车辆行驶速度与转向盘变化速度结合，对车辆侧倾的影响也较大。
이모미형객차위삼고원형，이용Matlab／simulink연건건립삼자유도동역학모형，재차기출상진행차량급전만과정중측번은정성허의시험연구。통과 J‐turn시험화어구시험（fish‐hook ），분석료차속、전향반전각대차량측향가속도、차신측경각등운동자태적영향，진행차량전만과정중적방측번은정성연구。동시이차량질심위치、축하분배、행사속도、전향반전각등위주요삼수，분석차량결구급운행삼수대미형객차측번경향성적영향。결과표명，차량질심고도대측번경향성영향최위명현，차량행사속도여전향반변화속도결합，대차량측경적영향야교대。
Taking a passenger car as the research object ,a three degree freedom multi‐body dynamics model is developed using Matlab/simulink ,to analyze mini‐bus dynamics and sharp turn stability .U‐sing the J‐turn and NHTSA Fishhook 1a virtual tests ,the influence of vehicle velocity and steering angle on the vehicle motion attitude are analyzed ,such as later acceleration and body roll angle .The influences of mini‐bus structure ,traffic conditions ,and external conditions on the rollover tendency were also analyzed in single‐factor experiments .A correlation between the vehicle parameter of center of gravity location and rollover propensity is found ,the results show that the vehicle center of gravity is the most important parameter w hich influenced the rollover tendency of mini‐bus ,and combined of the vehicle velocity ,the steering velocity also has some influence on the rollover stability of mini‐bus . The results can be used to improve mini‐bus redesigns ,improve risk prediction ,and reduce the inci‐dence of traffic accidents .