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.
