Open AccessInvestigation of dynamic lo dynamic loading of the traveling system of track-type tractor
Author(s) -
M. V Vyaznikov,
A. M. Vyaznikov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/709/2/022109
Subject(s) - finite element method , structural engineering , track (disk drive) , kinematics , stress (linguistics) , engineering , dynamic load testing , mechanical engineering , physics , linguistics , philosophy , classical mechanics
The article presents a technique for studying dynamic loading of the tracked vehicle undercarriage system. It includes developing a dynamic model of the undercarriage system for loads simulation in typical loading modes and finite element models of the undercarriage component parts to determine the stress-strain state and the safety factor of the parts for each computational case. The undercarriage system is described as a set of solid bodies connected by elastic-damping force elements among themselves, and with a ground contact area for a numerical solution of equations of motion. The time domain loads on the undercarriage system components obtained according to such a model in typical loading modes are used to identify the most dangerous, from the point of view of strength, computational cases for each element. Loads for each computational case are transferred to finite element models of the undercarriage parts, which are used to evaluate the strength. The technique is displayed in typical modes “tilted down on the idler when lifting the blade” and “single rail crossing”. The problems of load transfer from a dynamic model to component finite element models are considered. The described technique improves the reliability of undercarriage strength estimate in typical operation modes and allows you to reasonably choose configuration parameters by considering a large number of complex spatial loading modes, taking into account the kinematics and elastic characteristics of the undercarriage system.