Experimental method and software instruments for sliding tribosystem dynamic behavior research

Abstract

In this work, a harmonic oscillator with elastic elements is adopted as a model of a mechanical system sensitive to various force disturbances. The developed physical and mathematical models for the interaction of the oscillator with the tribosystem model formed the basis for the creation of a method and a set of experimental tools for assessing the tribological state of the contact and the behavior of the sliding tribosystem under dynamic operating conditions. For this purpose, an original installation was designed and built with a specially prepared test chamber using a harmonic oscillator as a sensitive unit. The installation was equipped with a specially developed measuring system for monitoring the state of the tribomodel and the oscillator, implemented using experimental data collection tools (products of National Instruments). According to the methodology, specialized software has been developed using LabVIEW, which allows the collection, processing, and storage of experimental data in large volumes and with high productivity. The experimental tools together with the developed software expand the range of test conditions for sliding tribosystems and make it possible to evaluate their behavior in various dynamic operating modes, including frictional self-oscillations.