Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Design and Manufacture of a Sample Holder for Fretting Wear Tests
Submission Author:
Thierre Lorenzo Amaral , DF
Co-Authors:
Thierre Lorenzo Amaral, Guilherme Lins, Thiago Doca
Presenter: Thierre Lorenzo Amaral
doi://10.26678/ABCM.COBEM2019.COB2019-1793
Abstract
Machine components used in the industry are constantly submitted to wear. Experimental studies on the wear phenomena are often conducted in the elastic regime using tribometers or studied using numerical models to assess the durability of mechanical systems. In this context, the main goal of this work is design a device that allows application of high levels of normal pressure and shear stress on a sphere-to-flat and a cylinder-to-flat contact configuration. This paper presents the modelling, stress field analysis, stiffness analysis and the fatigue life analysis for the device. The loads applied in the simulations were: a maximum compressive force of 10 kN and a maximum torque of 70,5 Nm. Graphic curves of the safety factor (FS) versus the compressive load applied have been made and the data from the stress field of the device body were acquired, which were later used in the fatigue analysis with the Smith- Watson- Topper method. It was established that the nominal load is 8 kN and the safety factor 2.5 for the device made of steel AISI 1045.
Keywords
contact mechanics, Wear test device, Mechanical Project
