Summary

The paper presents a modified shear stress model for TRI-1 lunar soil simulant, analyzing normal and shear stress distribution under wheels. It references existing models like Reece, Bekker, Wong-Reece, and Iagnemma, and discusses shear stress determination based on Janosi and Hanamoto (1961) model. The study focuses on mobility performance of planetary rovers on lunar terrain. The paper presents a modified shear stress distribution model for TRI-1 lunar soil simulant, comparing it with existing models. The model incorporates constants A, B, and F, and is validated against experimental data. The simulant is used to study wheel-soil interaction and shear stress distribution under different wheel sizes and soil conditions. This paper presents a modified shear stress model (SSM) for TRI-1 lunar soil simulant, analyzing shear stress distribution under different wheel geometries and densities. The model incorporates parameters like F, A, and B, which vary with density and shear deformation modulus k. The study uses TRI-1 simulant for experimental analysis and derives equations for shear deformation constants applicable to various simulants.

Methods and applications