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| Simulation Analysis of Multiaxial Heavy Vehicle Dynamic Load Characteristics under Bilateral Tracks’ Road Excitation |
| Liu Xiangyin Chen Yang Gao Pan Liu Dawei |
| College of Mechanical & Electronic Engineering Qingdao University,Qingdao 266071 |
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Abstract In order to study the dynamic load characteristics of multiaxial heavy vehicle under bilateral tracks’ road excitation，the random road surface in spatial domain was simulated through harmonic superposition method of rational function power spectral density(PSD), and a rigid-flexible coupling virtual prototype vehicle was established. Then a ride dynamic model of multiaxial heavy vehicle under bilateral tracks’ spatial domain road excitation was established, and the vehicle tire normal force and tire normal dynamic load coefficient were computed. Simulation results indicated that, comparing with the single tracks’ road excitation, the value and change law of normal forces on the both sides of each axle’s tires under bilateral tracks’ road excitation were not the same, and maximum value of tire normal force appeared in a different location; The value and change law of normal dynamic load coefficient of each axies’s tires were completely different in different driving speeds，the front-mid axles’ tire normal dynamic load coefficient was minimum, the mid-rear and rear axles’ tire normal dynamic load coefficients were maximum. The research results could provide the basis for the calculation of vehicle tire dynamic load and verification of dynamic response of road surface.
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Received: 11 November 2014
Published: 15 July 2015
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[1] 吕彭民，尤晋闽，和丽梅．路面随机不平度下车辆对路面的动载特性[J]．交通运输工程学报，2007，7(6)：55-58，69．
LU Pengmin，YOU Jinmin，HE Limei．Vehicle dynamic load property resulted from road random roughness [J]．Journal of Traffic and Transportation Engineering，2007,7(6)：55-58，69．
[2] 王直民，张土乔，吴小刚．不平整路面上的车辆等效动载系数[J]．浙江大学学报（工学版），2007，41(6)：1007-1011．
WANG Zhimin，ZHANG Tuqiao，WU Xiaogang．Equivalent vehicle dynamic load coefficient on rough pavement [J]．Journal of Zhejiang University（Engineering Science)，2007,41(6)：1007-1011．
[3] 曹源文，梁乃兴，于清，等．路面不平整引起的车辆动载计算方法[J]．交通运输工程学报，2008，8(2)：69-73．
CAO Yuanwen，LIANG Naixing，YU Qing，et al．Calculating method of vehicle dynamic load caused by uneven pavement[J]．Journal of Traffic and Transportation Engineering，2008,8(2)：69-73．
[4] Kropáč O, Múčka P. Effect of obstacles in the road profile on the dynamic response of a vehicle[J]. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of automobile engineering, 2008，222 (3)：353-370．
[5] 秦旻，梁乃兴，陆兆峰，等．动荷载作用下沥青路面寿命预估[J]．公路交通科技，2010，27(3)：34-38．
QIN Min，LING Naixing，LU Zhaofeng，et al．Remaining life prediction of asphalt concrete pavement under dynamic load[J]．Journal of Highway and Transportation Research and Development，2010，27(3)：34-38．
[6] 刘大维，刘伟，陈焕明，等．基于多体模型的重型车辆对路面的动载特性[J]．农业机械学报，2009，40(11)：7-12．
LIU Dawei，LIU Wei，CHEN Huanming，et al．Dynamic load characteristics of heavy vehicle based on multi-body dynamic model[J]．Transactions of the Chinese Society for Agricultural Machinery，2009，40(11)：7-12．
[7] 刘大维，陈焕明，刘伟，等．基于整车多体模型的重型车辆对路面的损伤评价[J]．振动与冲击，2010，29(4) ：92-96．
LIU Dawei，CHEN Huanming，LIU Wei，et al．Evaluation of road damage based on full heavy vehicle multi-body dynamic model[J]．Journal of Vibration and Shock，2010，29(4) ：92-96．
[8] 何兆益，刘炳森，杜子学，等．重型车辆与路面耦合作用的仿真分析研究[J]．公路交通科技，2009，26(3)：22-26．
HE Zhaoyi，LIU Bingsen, DU Zixue，et al．Analysis of coupling vibration caused by heavy-duty vehicles and road pavement[J]．Journal of Highway and Transportation Research and Development，2009，26(3)：22-26．
[9] X. M. Shi, C. S. Cai. Simulation of dynamic effects of vehicles on pavement using a 3D interaction model [J]．Journal of Transportation Engineering，2009，135(10) ：736-744．
[10] 蒋荣超，刘大维，王松，等．时域和空间域路面激励下重型车辆动载荷仿真分析[J]．公路交通科技，2012，29(5)：152-158．
Jiang Rongcha Liu Dawei Wang Song，et al．Simulation analysis of heavy vehicle dynamic load under road excitation[J]．Journal of Highway and Transportation Research and Development，2012，29(5) ：152-158．
[11] SUN L. Optimum design of “road-friendly” vehicle suspension systems subjected to rough pavement surfaces[J]. Applied Mathematical Modelling, 2002，26(5)；635-652.
[12] 王亚，陈思忠，郑凯锋．时空相关路面不平度时域模型仿真研究[J]．振动与冲击，2013，32(5)：70-74.
WANG Ya，CHEN Si-zhong，ZHENG Kai-feng．Simulation research on time domain model of road roughness with time-space correlation[J]．Journal of Vibration and Shock，2013，32(5)：70-74.
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