Development and Integration of a Soil-Tire Model for LAV-Terrain Systems

This paper presents a novel approach for modeling LAV-terrain systems in a dynamic simulation environment, which is based on results from the research and development of advanced technologies by the Computer Modeling and Simulation team of General Dynamics Land Systems-Canada (GDLS-C). The presented soil-tire model has been developed based upon the application of terra-mechanics and is being uniquely integrated with a full 8x8 LAV model in ADAMS/View, with incorporation of large tire deflections and multi-passing effect. It is shown that the highly efficient soil-tire model is capable of dynamically predicting soil sinkage, tire deflection, wheel slip, rolling resistance, drawbar pull and actual torque created at each soil-tire interface, as required by the mobility analysis of LAV systems over soft terrains.