THE USE OF ACCELERATION SIGNAL IN MODELING PROCES OF LOADING AN ELEMENT OF UNDERFRAME OF HIGH MOBILITY WHEELED VEHICLE

High mobility wheeled vehicles have been built with use materials with limited strength and durability. Usually total costs in life cycle of this kind of technical systems are significant, so the necessity of planning proper way of maintenance is highly desirable. Common ways of describing ultimate work capacity are based on profile ground tests (PT tests) and extrapolation of theirs results for the whole period of maintenance. That methods give biased results caused by among others differences in use and maintenance conditions. The useful methods in permanent tracking of state changes of critical units of vehicle have been exploring and algorithms to forecast the durability of vehicle that are the basis of pHUMS have been designed [11]. In the paper models that have been use to describe the way of loading in frequency domain were presented and a proposal of the new model for tracking a loading of an element of underframe of high mobility wheeled vehicle was proposed.