INFLUENCE OF EXTERNAL FORCE FACTORS ON THE STRENGTH OF UNIFORMLY LOADED CONSOLE-FIXED PARTS SUBJECT TO ABRASIVE WEAR
The intensity of wear observed in the working parts of machines operating in an abrasive environment largely determines their service life. However, in a number of cases, the downtime of equipment is associated with fractures of the operating elements casued by their abrasion. In this case, the operational state of the product is determined by the tolerable stresses. Theoretical studies on finding the mathematical relationships connecting wear and tolerable stresses are thus relevant. In addition, they are general and can be applied to various materials: metal, polymer, and composite ones. The goal of the present research is to make a theoretical study of the influence of external force factors on the strength of cantilever-fixed parts of various geometric shapes in the process of their abrasive wear during the period of operation under uniform loading. In other words, the authors seek to determine the theoretical value of the limiting wear of a part according to the tolerable stresses. As a result of the study, a mathematical expression was obtained to establish the relationship between the maximum tolarable stresses and the value of the limiting wear of a cantilever-fixed part under uniform loading. This relationship is necessary to analyse the values of the maximum tensile stresses in its sections. It has been established that the maximum tensile stresses are characteristic of the pinch point of the beam, regardless of its shape.