郑州大学学报(工学版)
鄭州大學學報(工學版)
정주대학학보(공학판)
JOURNAL OF ZHENGZHOU UNIVERSITY(ENGINEERING SCIENCE)
2009年
4期
44-47
,共4页
载重货车%动载荷%动载系数%随机振动
載重貨車%動載荷%動載繫數%隨機振動
재중화차%동재하%동재계수%수궤진동
heavy truck%dynamic load%dynamic load coefficient%random vibration
为研究大型载重货车对路面的动作用力,建立了五自由度三轴货车动力学模型,以路面随机不平度为激扰,研究车辆动载荷和动载系数随路面等级、车速、载重量、悬架参数的变化规律.结果表明:路面等级下降、提高车速都会使三轴货车各轮动载荷和动载系数增大;减小平衡悬架阻尼和增大平衡悬架刚度,则对三轴货车的中间轮和后轮的动载荷影响比较大;提高载重量,车辆各轮对路面的总作用力增大.
為研究大型載重貨車對路麵的動作用力,建立瞭五自由度三軸貨車動力學模型,以路麵隨機不平度為激擾,研究車輛動載荷和動載繫數隨路麵等級、車速、載重量、懸架參數的變化規律.結果錶明:路麵等級下降、提高車速都會使三軸貨車各輪動載荷和動載繫數增大;減小平衡懸架阻尼和增大平衡懸架剛度,則對三軸貨車的中間輪和後輪的動載荷影響比較大;提高載重量,車輛各輪對路麵的總作用力增大.
위연구대형재중화차대로면적동작용력,건립료오자유도삼축화차동역학모형,이로면수궤불평도위격우,연구차량동재하화동재계수수로면등급、차속、재중량、현가삼수적변화규률.결과표명:로면등급하강、제고차속도회사삼축화차각륜동재하화동재계수증대;감소평형현가조니화증대평형현가강도,칙대삼축화차적중간륜화후륜적동재하영향비교대;제고재중량,차량각륜대로면적총작용력증대.
The 3-axle vehicle model was established for the study of vehicle dynamic load that the trucks act on the road. Based on the road roughness, the change law of vehicle dynamic load and dynamic load coefficient, which are effected by road level、 vehicle velocity、weight and suspension parameters, were studied. It was found that when the road level is degraded or the vehicle speed is higher, the dynamic load and the dynamic load coefficient of each wheel are to increase. The reduction of the balanced suspension damping or the increase of the balanced suspension stiffness would cause the dynamic load of the middle and the rear wheels to increase. When the weight is added, the total load acting on the road is raised.
