The invention provides a high-precision
simulation method for temperature change of a
disc brake of a vehicle under a multi-cycle braking working condition. The high-precision
simulation method comprises the following steps of S1, building a
mathematical model of vehicle speed and
brake disc rotating speed change; S2, constructing a
solid calculation domain for transient heat conduction and heat
radiation calculation; S3, setting a
heat flux boundary condition for the friction surface of a
brake shoe according to the
mathematical model for calculating the
brake heat flux in each
single cycle;S4, setting a
heat flux boundary condition for the friction surface of the brake disc by using a P-in-P
algorithm; S5, constructing a fluid calculation domain for carrying out steady-state fluid
mechanics calculation; S6, setting a fluid-
solid dual-computational domain
data mapping strategy, and performing fluid-
solid dual-computational domain
coupling computation; and S7, stopping the fluid-soliddual-computational domain
coupling computation until the test end time point. According to the method, the problems of tedious calculation process and low calculation efficiency caused by excessive CAE
analysis software involved in the calculation of the temperature change of the vehicle
disc brake under the multi-cycle braking working condition in the existing
simulation method can be solved.