Tracked Vehicles Travel System Dynamics Simulation And Research On Rubbering Track Key Parts

Tracked vehicle is widely used in military, agriculture, construction and other areas, especially playing an important role in the defense force, and the level of tracked vehicle development reflects the national defense military strength of a country. Because of the complex structure of tracked vehicle, poor and varied working conditions, it will not only spend long time but also cost much money to optimize the vehicle performance and improvement structure by relying on experimental methods. With the tracked vehicle replacement faster and faster, more and more types of vehicles, the traditional means of development has seriously hampered the development of the enterprises. With the sophisticated CAE simulation analysis technology, the original physical prototype experiments will be replaced by tracked vehicle virtual prototype modeling and simulation and track key components Tracked optimization analysis. This not only greatly accelerate the development of speed, rich research tools, but also has important practical significance and research value.First, tracked vehicle model via simplifying weapons systems and armor systems is established. A certain tracked vehicle virtual prototype is established by using multi-body system dynamics software. Since the tracked vehicle with changeable environment, dynamic load response contact with all the parts and the ground under the experimental conditions is difficult to measure directly. So dynamic load response of track system is obtained by dynamics simulation of the tracked vehicle virtual prototype under different road, analyzes the reason of impact load variation.Theoretically, calculating rubber bushing shear stress and compressive stress of the track shoe component under interference assembly, the accuracy of theoretical calculation is proved by the finite element analysis. Work load boundary of track shoe is obtained by dynamic simulation, using ANSYS to analyze stress field and temperature field of the rubber bushing in the friction process with metal pipe wall in the friction, determining influnce of the initial temperature and load size on the results. the environment temperature limit of rubber bushing is confirmed by comparing the bushing temperature and stress under different initial temperature; The influence on bushing temperature rise on different load condition is analyzed.The track hanging plastic has many parts and large mass, in contradiction to the requirements of lightweight tracked vehicles; At the same time, the larger quality of track shoe is an obstacles for enterprises on the way to compete with rival. Therefore, the structure of hanging plastic track is optimized to decrease the size of redundancy and reduce overall quality of rubber track shoe. The metal plate structural optimization were conducted to reduce quality as the objective by means of finite element analysis tools, and then the hanging rubber track stress state was simulated, which meet the strength and the condition that without changing the shape of the structure and function. The results show that this method can effectively complete the optimization goal hanging rubber track metal plate, and the effect is obvious.