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引入相似理论对月球车的轮土交互系统进行研究,建立了月壤-车轮交互系统的地面力学相似模型,针对原位月壤内聚力较小的特点,提出了一种无需改变车轮尺寸、以模拟月壤为土壤介质的模型试验方法,对月面重力环境下月球车轮的牵引性能进行预测.利用室内土槽试验和颗粒流仿真相结合的方法对该模型试验方法的有效性进行验证,验证结果与模型试验的理论分析结果较为接近,表明该法具有较好的可行性和有效性,可考虑用于预测月球车的月面牵引性能.
A similar theory is introduced to study the wheel-soil interactive system of lunar rover. A similar ground mechanics model of lunar soil-wheel interactive system is established. According to the characteristics of small cohesion in situ lunar soil, a new method is proposed, Lunar soil as the soil medium model test method to predict lunar wheel traction performance in lunar gravity environment.Using the method of indoor soil tank test and particle flow simulation to verify the validity of the model test method, Which is close to the theoretical analysis of the model test. It shows that this method is feasible and effective and can be used to predict lunar traction performance of lunar rover.