月球车凹面轮特性分析

Analysis of Concave Wheel Performance for Lunar Rover

载人月球车作为深空探测必不可少的工具,受到广泛而深入地研究。其中,月球车车轮结构及轮壤相互作用的力学特性对月球车的性能有着重要的影响。结合国内外探测器车轮的特点,提出凹面轮的概念,并建立了凹面轮的轮地相互作用模型。以沉陷、牵引力和驱动力矩作为评价指标,应用ABAQUS软件对凹面轮进行仿真分析,得出凹面轮宽度和凹进深度等结构参数对各评价指标的影响。将凹进深度与凸起高度相同的凹面轮和普通凸面轮进行对比,得出凹面轮在侧倾稳定性和防扬尘特性以及三个评价指标上的优势。

As an essential tool for deep space exploration,manned lunar rover is extensive and in-depth studied.The structure of lunar rover wheels and the mechanical properties of tire-terrain interaction have a significant impact on the performance of the rover.Combining with domestic and foreign aircraft wheels,the concept of concave wheel is put forward and the tire-terrain interaction model is established.By setting the sinkage,traction,driving torque as the evaluation indexes,the structure of concave wheels is analyzed by using ABAQUS software,the influence of structural parameters can be obtained,such as concave wheel width and recessed depth on each evaluation index.By making the concave depth and the convex height the same,and contrasting concave wheel and ordinary convex wheel,the advantage of concave wheel in the roll stability and properties of raising lunar dust and three evaluation indexes can be obtained.