Analysis improves traction and stability in planetary rover using differential bar design and materials.
In this paper, the analysis of the differential bar has been performed for the rocker bogie mechanism-based rover to improve the manoeuvrability and its overall stability. The purpose of this differential bar was to increase the stability on rough terrains, increase traction by maximising the grip and avoid wheel slippage. The analysis was performed by considering five materials for the differential bar, viz., aluminium 6061 T6, aluminium alloy, Ti-6Al-4V titanium alloy, Stainless steel 316 annealed and carbon fibre. Solid modelling software was used to design the 3D CAD model of the differential bar, and finite element analysis was performed to optimise the performance of the differential bar. It was found that Ti-6Al-4V titanium alloy was a suitable material for the rover. Major Findings: Ti-6Al-4V titanium alloy can be used as an ideal material for differential bars in planetary rovers which operate under extreme environmental conditions.
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Pillai et al. (2025) studied this question.
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