摘要
设计了一种月球车弹性车轮,这种结构的优点是,在发射过程中车轮收缩可以节省所占火箭内部空间,行走时车轮在重力载荷作用下产生弹性变形,可以增大接地面积,减小接地比压,车轮可以吸收行走时的振动冲击,起到弹性减振元件作用。通过有限元分析得到了载荷作用下的车轮变形,借鉴车辆地面力学中对弹性轮胎的分析方法,计算了车轮在月球表层松软土壤上行走时的挂钩牵引力,并与同等尺寸的刚性车轮进行了对比,分析表明弹性车轮结构将提高月球探测车行走性能。
A spring wheel was designed for lunar rover, the advantages of this configuration can be summarized as below： the wheel could be contracted to get a smaller stowed volume in launch vehicle, and the deformation of the wheel under load can increase the contact surfaces and decrease the pressure on soil. Also it can smooth rover vibration on rough terrain. The deformation of the wheel was defined through finite element method, and according to analysis method for elastic tyre in terramechanics, the draw bar pull force of spring wheel on lunar soil was computed and compared with that of rigid wheel. The result shows that the spring wheel can improve the lunar rover mobility performance.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2009年第2期134-137,共4页
China Mechanical Engineering
基金
国家863高技术研究发展计划资助项目(2007AA11Z244)
关键词
月球车
弹性车轮
有限元分析
挂钩牵引力
lunar rover
spring wheel
finite element analysis
draw bar pull force
