Friction Performance Analysis of Mine Wet Multi-Disc Brake

Abstract

This article takes the wet multi-disc brake used in mining Isuzu 600P as the research object, establishes a simplified three-dimensional model of its key components through SOLIDWORKS and imports it into ANSYS Workbench to establish the flow field and structure field model of the wet brake. Based on the fluid–solid coupling, the finite element simulation of the temperature field and stress field of the friction pair of the wet brake under different braking pressures, braking initial speeds, and fluid viscosities was carried out, and then the position changes of the friction pairs at high temperature hot spots and high stress points were analyzed to determine the stability of its friction performance. Finally, by comparing the temperature change curves of the same point during the braking process under different braking conditions, the validity of the finite element analysis results is verified. The results show that the flow field pressure inside the wet brake is opposite to the flow field velocity, the initial braking velocity is the most influential factor on the friction performance of the friction pair, affected by the fluid, the maximum equivalent stress of the groove between the core plates is the same as the braking force. Pressure, braking initial speed, and fluid viscosity are proportional.