CAJ | 학술논문

利用SIMPACK软件分别建立重型车辆前悬架、后平衡悬架、转向系统和轮胎模型等,在此基础上建立重型载货汽车整车多体动力学模型,并采用谐波叠加法构建随机路面,建立了一个可考虑路面不平度的重型车辆对路面动载特性研究平台,利用该平台探讨了重型车辆轮胎三向动载荷与路面不平度、行驶速度的关系.仿真结果表明:前轴轮胎纵向动载荷小于中、后轴轮胎纵向动载荷,前轴轮胎侧向和法向动载荷大于中、后轴轮胎侧向和法向动载荷,中、后两轴轮胎动载荷相差很小;路面在A～D级、行驶速度为60～90 km/h时,前轴车轮法向动载系数大于中、后轴车轮法向动载系数,前轴轮胎法向作用力小于中、后轴轮胎法向作用力.
이용SIMPACK연건분별건립중형차량전현가、후평형현가、전향계통화륜태모형등,재차기출상건립중형재화기차정차다체동역학모형,병채용해파첩가법구건수궤로면,건립료일개가고필로면불평도적중형차량대로면동재특성연구평태,이용해평태탐토료중형차량륜태삼향동재하여로면불평도、행사속도적관계.방진결과표명:전축륜태종향동재하소우중、후축륜태종향동재하,전축륜태측향화법향동재하대우중、후축륜태측향화법향동재하,중、후량축륜태동재하상차흔소;로면재A～D급、행사속도위60～90 km/h시,전축차륜법향동재계수대우중、후축차륜법향동재계수,전축륜태법향작용력소우중、후축륜태법향작용력.
A detailed multi-body dynamic model of a heavy truck was established by using SIMPACK software, which included front suspension, rear balance suspension, steering system, tyre system etc. The harmony superposition method was used to simulate stochastic road with a specific spectrum, and an integrated environment with different road roughness was built to study the relationship between vehicle dynamic tyre loads with three directions and different road grading and vehicle speed. Simulation results indicated that, the front axle's vehicle longitudinal dynamic tyre load was less than the middle and the rear axles, and the front axle's vehicle side and normal dynamic tyre load was more than the middle and the rear axles. For the middle axle and the rear axle, the vehicle dynamic tyre load was roughly the same. At 60 ～ 90 km/h driving, on grade A～D road, the front axle's vehicle normal dynamic tyre load coefficient was more than the middle and the rear axles, and the front axle's vehicle normal tyre force was less than the middle and the rear axles.