Modeling and Application of Stochastic Virtual Prototype Models of Tracked Vehicle-ground System Based on Monte Carlo

In order to reflect random factors of systems more realistically,a kind of stochastic virtual prototype modeling approach is put forward in the paper,which is the combination of stochastic simulation technology and deterministic virtual prototype models.A dynamic model of high velocity tracked vehicles is established based on relative coordinate approach.The model describes the interaction relation between track links and ground,and explains the multi-pass effects of wheels on ground deformation and grounding pressure distributions.In cooperation with the computation example of grounding pressure distributions of tracked vehicles,methods and procedures of stochastic virtual prototype modeling is illustrated,and the computing result of the interval distribution and probability density distribution of grounding pressure distributions of tracked vehicles is presented considering the influence of uncertain soil parameters.The approach establishes an effective basis for the evaluation of the traction performance and mobility of tracked vehicles under uncertainty environments.