Rigid-flexible coupling dynamics modeling and sensitive factor analysis of tracked vehicles

Tracked vehicles are widely used in agriculture, military, construction and other fields because of their high passability, super climbing ability and high traction, and their dynamic performance directly determines the ride comfort and running stability of the vehicle. Identifying the sensitive factors that affect the dynamic characteristics of tracked vehicles has important engineering value in improving the dynamic performance of the vehicle. In this paper, the dynamic modeling and sensitive factor analysis of the tracked vehicle are carried out. Focus on the different flexibility treatment methods, road slope, speed and other parameters of the tracked body and balance elbow, and discuss the influence of different factors on the dynamic performance. The results show that the compliance of the balance bend and the body in the rigid-flexible coupled model will lead to changes in the equivalent stiffness and damping of the entire body, resulting in significant changes in the dynamic response. The acceleration response is greatly affected by the high frequency mechanism, and the pitch angle response is greatly affected by the low frequency mechanism.