Measurement of terrain values and drawbar pullfor six wheeled vehicle on sand
2008 (English)In: 16th International Conference of the International Society for Terrain-Vehicle Systems, Turin, 2008Conference paper (Other academic)
A method to measure terrain parameters and drawbar pull for a six-wheeled vehicle on sand is proposed,tested and evaluated. The method is developed in order to be able to validate previously proposedtire/terrain models that are developed to simulate the behaviour of a six-wheeled vehicle withelectric transmission on soft ground. Tests were performed at different tire pressures, and it is shownthat the drawbar pull is vastly improved at lower tire pressure. Since the tire/terrain model uses terrainparameters such as pressure–sinkage and shear stress–displacement relationships, the sand propertiesare measured with a Bevameter. Parameters in the pressure–sinkage relationship are estimated to fitthe measured data. Both external and internal shearing properties of the sand are measured using arubber coated shear ring and a shear ring with grousers, respectively. The measured shear behaviouris shown to agree reasonably well with shear curves of simple exponential form. This will be a basein the development of a strategy to get improved cross country characteristics of six-wheeled vehicleswith individually controlled electric transmission on soft ground.
Place, publisher, year, edition, pages
mobility, wheeled vehicles, soft ground, Bevameter
IdentifiersURN: urn:nbn:se:kth:diva-25520ScopusID: 2-s2.0-70449611443OAI: oai:DiVA.org:kth-25520DiVA: diva2:358907
16th International Conference of the International Society for Terrain-Vehicle Systems
Q 201010262010-10-262010-10-252010-10-26Bibliographically approved