A numerical method for dynamic analysis of tracked vehicles of high mobility

Abstract

A numerical method is presented for the dynamic analysis of military tracked vehicles of high mobility. To compute the impulsive dynamic contact forces which occur when a vehicle passes on a ground obstacle, the track is modeled as the combination of elastic links interconected by pin joints. The mass of each track link, the elastic elongation of a track link between pin joints by the track tension, and the elastic spring effects on the upper and lower surfaces of each track link have been considered in the equations of motion. And the chassis, torsion bar arms, and road wheels of the vehicle are modeled as the rigid multibodies connected with kinematic constraints. The contact positions and the contact forces between the road wheels and track, and the ground and the the track are simultaneously computed with the solution of the equations of motions of the vehicle consisting of the multi bodies. The iterative scheme for the solution of the multibody dynamics of the tracked vehicle is presented and the numerical simulations are conducted.

Assessment of the Impact of Wear and Tear of Rubber Elements in Tracked Mechanism on the Dynamic Loads of High-Speed Tracked Vehicles

“…The issue of vehicle operational safety and dynamic loads affecting this safety is described in the literature [8,9]. The papers [10,11] present the results of numerical tests of vehicle models with crawler tracks that differ in the way the links are connected. Their effects have been analysed on the dynamic loads of the vehicle body when passing over road bumps.…”

A new suspension system of an autonomous caterpillar platform

“…In these models, contact forces act between a single track link and a single wheel and also between a single track link and the ground. Contact forces, which have been applied between the wheel and ground, were described by Lee (2000). Specific parameters of these connections and also parameters of the forces have been described in ADAMS (ADAMS/View, Solver Documentation, 2010).…”

Simulation of 2S1 Tracked Vehicle Model with Modernized Suspension System during Crossing a Single Obstacle

“…Contact forces act between a single track link and a single wheel as also between a single track link and a ground. A contact forces, which are applied between wheel and ground, were described by Lee [3]. Specific parameters of these connections as also parameters of forces are described in ADAMS program documentation [4].…”