1.School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2.School of Mechanical Engineering, Anhui University of Science and Technology, Ma’anshan 243032, China
Abstract:Driving performance and passing performance are the basic indicators to evaluate vehicles’ off-road performance.To obtain the off-road performance of a vehicle with eight-axis connected hydro-pneumatic suspension, the driving performance and passing performance were studied.Firstly, the physical model of the whole vehicle was simplified, the vibration equation of the vehicle was deduced according to the Lagrangian equation, and the white noise road surface input equation was established.The rationality of the flexible model was verified by comparing simulation results with experimental results.Based on the flexible model and the road roughness coefficient as the input variable, the driving performance of the vehicle on different roads was obtained.By establishing the mathematical models of pulse impact, step impact and shock impact, the passing performance was obtained.The results show that with the deterioration of the road level, the limit speed of the eight-axle vehicle was reduced, the limit speed of the B-level road surface is 144 km/h, C-level road surface is 64.8 km/h and the D-level road surface is 32.4 km/h, the E-level road surface is 7.2 km/h. The road surface impact type mainly affects the vehicle-head acceleration and the extreme value of the wheels’ relative dynamic load.The wheel takes off when the pulse impact occurs, and the vehicle-head acceleration exceeds 2.5 times the gravity acceleration, while the step impact and the shock impact do not appear the wheel taking off and the 2.5 times gravity acceleration overload.
赵昌方1,孙船斌2,乐贵高1,马大为1,任杰1,仲健林1. 八轴连通式油气悬架车辆行驶性能和通过性能研究[J]. 振动与冲击, 2021, 40(4): 188-194.
ZHAO Changfang1,SUN Chuanbin2,LE Guigao1,MA Dawei1,REN Jie1,ZHONG Jianlin1. A study on driving performance and passing performance of the vehicle with eight-shaft interconnected hydro-pneumatic suspension. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(4): 188-194.
[1] Cao D, Rakheja S, Su C Y. Roll plane analysis of a hydro-pneumatic suspension with twin-gas-chamber struts[J]. International Journal of Heavy Vehicle Systems, 2007, 14(4): 355-375.
[2] Cao D, Rakheja S, Su C Y. Roll- and pitch-plane-coupled hydro-pneumatic suspension. Part 2: dynamic response analyses[J]. Vehicle System Dynamics, 2010, 48(4): 507-528.
[3] 魏建华, 杜恒, 方向, 等. 基于ADAMS/Simulink/AMESim的油气悬架道路友好性分析[J]. 农业机械学报, 2010, 41(10): 11-17.
WEI Jian-hua, DU Heng, FANG Xiang, et al. Road-friendliness of Interconnected Hydro-pneumatic Suspension Based on ADAMS/Simulink/AMESim[J]. Transactions of the Chinese Society for Agricultural Machinery, 2010, 41(10): 11-17.
[4] 杜恒, 魏建华. 基于遗传算法的连通式油气悬架平顺性与道路友好性参数优化[J]. 振动与冲击, 2011, 30(8): 133-138.
DU Heng, WEI Jian-hua. Parameters optimization of interconnected hydro-pneumatic suspension for road comfort and road-friendliness based on genetic algorithm[J]. Journal of Vibration and Shock, 2011, 30(8): 133 -138.
[5] 林国问, 马大为, 乐贵高, 等. 双气室油气悬架系统车辆道路友好性分析[J]. 机械设计, 2014, 31(2): 92-96.
LIN guo-wen, MA Da-wei, LE Gui-gao, et al. Road-friendliness analysis of twin-accumulator hydropneumatic suspension vehicle[J]. Journal of Machine Design, 2014, 31(2): 92-96.
[6] 孙船斌, 马大为, 朱忠领. 基于不同位置阻尼组件的连通式油气悬架振动性能[J]. 机械设计, 2015, 32(9): 34-40.
SUN Chuan-bin, MA Da-wei, ZHU Zhong-ling. Vibration performance of interconnected hydro-pneumatic suspension based on the damping assembly at different positions[J]. Mechanical Design, 2015, 32(9): 34-40.
[7]马建勋. 考虑车架柔性的重型车辆平顺性研究[D]. 2015, 4-14.
MA Jian-xun. Research on the ride comfort for heavy-duty truck with flexible frame[D]. 2015, 4-14.
[8] 杨波, 王学林, 胡于进, 等. 多轴汽车平顺性的柔性模型研究[J]. 机械工程学报, 2003, 39(12): 145-150.
YANG Bo, WANG Xue-lin, HU Yu-jin, et al. Flexible model of multi-axle vehicle ride comfort[J]. Chinese Journal of Mechanical Engineering, 2003, 39(12): 145-150.
[9] 杨波, 王学林, 胡于进, 等. 基于柔性模型的多轴汽车平顺性的仿真研究[J]. 汽车工程, 2003, (05): 481-486.
YANG Bo, WANG Xue-lin, HU Yu-jin, et al. A Simulation Study on Ride Comfort of Multi-Axle Vehicle Based on Flexible Model[J]. Automotive Engineering, 2003, (05): 481-486.
[10] 周敏, 章杰, 郑敏毅, 等. 装有液压互联悬架车辆的越野性能仿真与试验研究[J]. 汽车工程, 2017, 39(04): 447-456.
ZHOU Min, ZHANG Jie, ZHENG Min-yi, et al. Simulation and Experimental Study on the Off-road Performance of Vehicle with Hydraulically Interconnected Suspension[J]. Automotive Engineering, 2017, 39(04): 447-456.
[11] 王云超, 刘金强, 李彦晨, 等. 三轴车辆连通式油气悬挂系统的综合特性[J]. 集美大学学报(自然科学版), 2016, 21(06): 453-459.
WANG Yun-chao, LIU Jin-qiang, LI Yan-chen. Comprehensive Characteristics of Interconnected Hydro-pneumatic Suspension System for Three-axle Vehicle[J]. Journal of Jimei University(Natural Science), 2016, 21(06): 453-459.
[12] Liu P J, Rakheja S, Ahmed A K W. PROPERTIES OF AN INTERCONNECTED HYDRO-PNEUMATIC SUSPENSION SYSTEM[J]. Transactions of the Canadian Society for Mechanical Engineering, 1995, 19(4): 383-396.
[13] 汤爱华, 康小鹏, 欧健, 等. 车辆平顺性评价标准适用性分析[J]. 四川理工学院学报(自然科学版), 2011, 24(05): 530-533.
TANG Ai-hua, KANG Xiao-peng, O Jian, et al. Analysis on Applicability of Ride Comfort Standards to Vehicles[J]. Journal of Sichuan University of Science & Engineering (Natural Science Edition), 2011, 24(05): 530-533.
[14] 吴志成, 陈思忠, 杨林, 等. 越野车辆平顺性评价方法研究[J]. 兵工学报, 2007, (11): 1393-1396.
WU Zhi-cheng, CHEN Si-zhong, YANG Lin, et al. Research on Objective Evaluation Criterion for Ride Comfort of Off-road Vehicles[J]. Acta Armamentarii, 2007, (11): 1393-1396.
[15] Pradko F, Lee R A, Greene J D. Human vibration-response theo-ry, ASME Paper NO. 65-WA/HUF-19[R]. US: ASME, 1965.
[16] 林国问, 马大为, 朱忠领. 基于多轴连通式油气悬架的导弹发射车振动性能研究[J]. 振动与冲击, 2013, 32(12): 144-149.
LIN Guo-wen, MA Da-wei, ZHU Zhong-ling. Vibration of a missile launcher with a multi-spindled interconnected hydropneumatic suspension[J]. Journal of Vibration and Shock, 2013, 32(12): 144-149.
[17]贾召敏, 曹兵, 张云波, 等. 油气悬架越野火箭炮的发射振动性能[J]. 火力与指挥控制, 2015,4 0(11): 163-166.
JIA Zhao-min,CAO Bing,ZHANG Yun-bo et al.. Vibration of a Rocket Artillery with Hyd-ropneumatic Vehicle Suspension[J]. Fire Control & Command Control, 2015,4 0(11): 163-166.
[18] Hou Y S, Song H X, Wang C. The Mechanical Characteristics Study on an Interconnected Anti-Rolling Suspension System[J]. Advanced Materials Research, 2013, 791-793: 676-680.
[19] 苗明, 方新, 王欣, 等. 连通式油气悬挂系统阻尼特性分析[J]. 中国工程机械学报, 2012, 10(01): 23-28.
MIAO Ming, FANG Xin, WANG Xin, et al. Damping property analysis on interconnecting oil-gas suspension system[J]. Chinese Journal of Construction Machinery, 2012, 10(01): 23-28.