侧倾角对机械弹性车轮刚度及接地特性的影响  

Influence of Camber Angle on Stiffness and Grounding Characteristics of Non-pneumatic Mechanical Elastic Wheel

作　　者：赵又群[1] 杜现斌[1] 林棻[1] 王强[1] 付宏勋[1] ZHAO You-qun;DU Xian-bin(College of Energy and Power Engineering, L1N Fen, WANG Qiang, FU Hong-xun Nanjing University of Aeronautics and Astronautics Nanjing 210016, Jiangsu, China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《兵工学报》2018年第3期444-450,共7页Acta Armamentarii

基　　金：国家自然科学基金项目(11672127);总装备部探索研究重大项目(NHA13002);中央高校基本科研业务费重大项目培育基金项目(NP2016412);江苏省普通高校研究生科研创新计划项目(KYLX15_0254)

摘　　要：为提高车辆行驶的安全性,对一种新型非充气式机械弹性安全车轮在不同侧倾角工况下的刚度特性及接地特性进行了研究。在充分考虑0轮体层合结构基础上,基于有限元法建立了包含橡胶材料的不可压缩性、大变形及车轮与地面接触非线性等特征的机械弹性车轮三维有限元模型,并通过加载试验对模型进行了精度验证。将车轮刚度特性及侧倾接地特性的仿真和试验结果进行对比,分析了侧倾角对车轮垂向刚度、下沉量、接地印迹及压力分布等特征的影响。结果表明:车轮的垂向刚度随侧倾角的增大而减小;侧倾角的存在加剧了车轮胎肩部位的应力集中,使接地区域压力分布的均匀性变差。研究结果为分析机械弹性车轮侧倾特性、0轮胎面的不均匀磨损及其结构优化等提供了参考。The vertical stiffness and grounding characteristics of a non-pneumatic mechanical elastic wheel under the conditions of different camber angle were studied to improve the vehicle driving safety. In considering the laminated structure of flexible tire body,a three-dimensional finite element model（ FEM）of mechanical elastic wheel was established,which includes the incompressibility of rubber material,large deformation and contact nonlinearity. Static loading tests were conducted to validate the accuracy and reliability of the FEM. The simulated results of the influence of camber angle on vertical stiffness,contact patch and pressure distribution are compared with experimental results and discussed in detail.The results show that the vertical stiffness decreases with the increase in camber angle; the pressure is mainly concentrated in the shoulder of flexible tire body; and the uniformity of the pressure distribution becomes worse as the camber angle increases. The research provides a theoretical reference for the study on the camber performance,the uneven wear of tread and the structure optimization.

关 键 词：安全轮胎 侧倾角 垂向刚度 接地特性 有限元法 

分 类 号：U463.34[机械工程—车辆工程]