| Tracked Tank play a decisive role in the military field.It is the main weapon of land combat with large firepower,high mobility and good protection.How to improve the off-road trafficability and make it play its advantages on the battlefield is a hot topic in modern tank research.Based on a large number of related literatures,this paper studies the walking performance theory of tracked tank,completes its kinematics analysis,the interaction between tracked and soil analysis and dynamics analysis,and provides theoretical basis for the dynamic simulation of the walking system of tracked tank.This paper presents the principle of multi-body dynamics modeling and simulation and the method of tracked tank cross-country trafficability simulation,chooses existing typical tanks,establishes virtual prototype,chooses several typical road conditions,completes the simulation and analysis of cross-country trafficability by using multi-body dynamics modeling and simulation software,and compares the simulation results with the actual parameter data to verify the reliability of the tracked tank cross-country trafficability simulation side method.According to the existing topics,in the tank development link,the development needs of new tanks are analyzed.Based on the theoretical analysis of crawler walking system,the design scheme is determined and the virtual prototype is established.The simulation method is applied to analyze whether the design scheme can reach the relevant indicators of off-road passability,and completes physical prototype trials and related tests.The simulation analysis and test results show that the simulation method of tracked tank’s off-road trafficability has high reliability and high fidelity,which could predict off-road trafficability scientifically and accurately.The application in the development of new tanks has the practical significance,which could reduce the development cost of new tanks,improve the development level,shorten the development period,and improve the off-road trafficability of tanks. |