Virtual vehicle ride comfort experiment on high-mobility tracked vehicle

A spatial dynamic analysis model for high-mobility tracked vehicles is constructed for evaluation of ride performance on rough terrain is presented in this paper. In the processing of making virtual tracked vehicle model, a whole tracked vehicle is disassembled as three sub blocks: hull, suspension system and road. Hull includes turret, artillery, power-train system and transmission system is regarded as single rigid-body. Three Cartesian generalized coordinates and three Euler angle coordinates are adopted to describe its movement. Suspension system is consists of road-wheel arm, torsion bar and shock absorber. The motion of the road arms should be considered for the evaluation of high-mobility tracked vehicle ride performance in numerical analysis model. The interaction between wheel, belt and road is depicted particular. Road file that adapted the virtual experiments designed while refer to the real road power spectrum. So a 3D visual prototype model of high-speed tracked. vehicle is setup. While the virtual tracked vehicle is ride simulation in computer, the vibration of driver is visual on computer screen, and the acceleration of driver from virtual prototype analysis is closed to the real vehicle test. The results show that complicated multi-body system, such as high-speed tracked vehicle could be successfully modeled by detailed 3D prototype. Virtual experiment for complex multi-body system was reliable..