| 轮式车辆速差转向过程的转向阻力特性 |
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| 引用本文： | 李雪原,张宇,胡纪滨,苑士华.轮式车辆速差转向过程的转向阻力特性[J].兵工学报,2011,32(12):1433-1438. |
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| 作者姓名： | 李雪原 张宇 胡纪滨 苑士华 |
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| 作者单位： | (北京理工大学 车辆传动国家重点实验室, 北京 100081) |
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| 基金项目： | 国家部委基础科研资助项目(A2220060029) |
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| 摘 要： | 研究了轮式速差转向车辆的转向阻力特性,运用离散单元方法(DEM)分析速差转向过程中轮胎与地面的相互作用,使用PFC2D软件建立轮胎侧向离散元细观仿真模型,得到转向阻力与相对滑移速度、下陷深度的数值关系.在此基础上,给出了轮胎转向阻力系数的拟合公式.仿真结果表明,轮胎推土阻力远大于轮胎与地面之间的摩擦力.
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| 关 键 词： | 公路运输 速差转向 地面力学 离散单元法 转向阻力 |
Skid-steering Resistance Characteristics of Wheeled Vehicle |
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| LI Xue-yuan
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ZHANG Yu
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HU Ji-bin
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YUAN Shi-hua.Skid-steering Resistance Characteristics of Wheeled Vehicle[J].Acta Armamentarii,2011,32(12):1433-1438. |
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| Authors: | LI Xue-yuan ZHANG Yu HU Ji-bin YUAN Shi-hua |
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| Affiliation: | (Beijing Institute of Technology, National Key Lab. of Vehicular Transmission, Beijing 100081, China) |
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| Abstract: | The steering resistance characteristic of wheeled skid-steering vehicle is studied,and the interaction of tire-ground is analyzed by using the discrete element method(DEM).A micromechanical model for lateral interaction of tire and ground is established by using PFC2D software,and the relationship of resistance-relative slip velocity and resistance-sag depth is simulated.The fitting formula of skid-steering resistance coefficient is given.The result shows that the bulldozing resistance between tire and ground is much higher than friction force. |
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| Keywords: | road transportation skid-steering ground mechanics discrete element method steering resistance |
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