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A mobility model for tracked vehicles

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https://ir.library.oregonstate.edu/concern/graduate_projects/d217qv72n

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  • A semi-empirical mobility model is presented which predicts tracked vehicle performance in timber harvesting applications. The interactions between the log load and the terrain, the log load and the vehicle, and the vehicle and the terrain cause resistances for the vehicle. The mobility model calculates these resistances, comparing them to both the power limitations of the vehicle and the tractive limitations of the soil, to determine if the vehicle is immobilized. If not, then the vehicle speed is calculated based on available drawbar pull. The timber harvesting productivity of the vehicle in the given terrain is calculated as a function of the vehicle velocity, non-travel time, and delays. The mobility model can be used to analyze either flexible track or rigid track vehicles. Soil strength is measured by rating cone index. R-A-F-T-S, a user-interactive computer program of the mobility model, is presented. R-A-F-T-S is an acronym for '1rigid and flexible track skidding'1. The program is written in HP 97050A version of the BASIC language. Documentation for using the program is included.
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