月球车车轮与土壤相互作用的力学特性分析

Mechanical analysis of wheel-soil interaction of lunar rover

月球车车轮的结构特征及其与土壤相互作用的力学特性对月球车的运动性能有着重要的影响,了解车轮的以上特性对整车的设计有着重要作用。基于地面力学中土壤的承压、剪切模型,建立了刚性车轮在塑性土壤上运动的力学方程,并通过实例计算分析了车轮的运动状态及结构参数变化对其力学参量的影响,为月球车车轮的性能测试和设计改进提供了参考数据。

The structure of wheel and its mechanical behavior in soil is crucial to the performance of the whole lunar rover, and the knowledge of these is helpful to improve the design of the lunar rover. Based on the press - sinkage and shear model of the soil, this paper constructs the force balance equation of the wheel, analyses effect of the wheel＇ s driving state and its structure parameters to the performance of the wheel, which is helpful to design a test - bed and improve the design of the wheel.