火星表面土壤力学性能参数研究

摘要

The mechanical properties of the soil on planet surface and the chassis tractive perform⁃ance based on the wheel⁃soil interaction is becoming more and more important for planet rover de⁃sign. Based on the Vehicle Terrain Mechanics, analyzes the mechanical properties of the lunar and Martian soil were summarized and analyzed in this paper, and the Martian soil simulant mechanical properties model was set up. Three simulant soil models were proposed, such as the loose grained drift analogue, medium grained blocky analogue, and close grained crusty analogue, from low carry capacity to high carry capacity. The founding of the wheel⁃soil interaction model can provide techni⁃cal support for preparing Martian soil simulant and guide the mobile system design and the ground traction performance test.%行星表面的土壤力学特性及基于轮壤接触力学的牵引性能是星球车行走系统设计过程的重点。以车辆地面力学理论为基础，总结分析了月壤及火星土壤力学参数特点。基于模拟月壤力学参数模型建立方法，提出疏松细粒类、适中块状类、密实硬质类三种类型的模拟火星土壤力学参数模型，涵盖火星表面从低承载力到硬实地面的表层土壤类型，为模拟火星土壤制备、建立火星车轮壤力学模型、进行星球车行走系统设计及地面牵引性能试验提供技术支持。