Some aspects on modeling of the moving forest machines

摘要

This paper concentrates on some important aspects, restrictions and problems that should be considered when modeling off-highway vehicles. The main modeling interest is focused on log forwarder machines, but indicated principles are easily generalize to the other kind of vehicles and machines. The mechanics, hydraulics, hydrostatic propelling system with control system, tire-road- interaction and system interaction were modeled by using ADAMS(Automatic Dynamic Analysis of Mechanical Systems, ADAMS is a registered trademark of Mechanical Dynamics, Inc.) dynamic simulation software. Also the modeling of flexible parts with lumped-mass approach and assumed modes methods are discussed. The matters are examined mainly from the point of view of modeling techniques with the ADAMS dynamic simulation software.