Dynamic Response Modeling of Fluid-Solid Coupling for Wet Brake Disc

Abstract

Due to the poor conditions of wet brake cooling and the high temperature of the working characteristics, this paper intended to introduce the oil film vadose between the brake linings, considered the variation of volume of grooves on the friction plate, and then proposes the three-dimensional transient dynamic response of fluid-solid coupling mathematical model. By numerical analysis of the disc transient thermal stress field distribution on the friction plate, the friction surface temperature field variation is obtained. Finally, the results shows that the mathematical model is effective and feasible.

Defining the Temperature Change of the Brake Disc

“…Since q1 and q2 are equal, a duplicator enters the equation. (8) where: the αol is the oil heat transfer factor is constant along the radius of the disc.…”

Thermoelastic vibration analysis of disc brake based on multi-physical field coupling method

“…At present, coupled calculation of three physical fields has been applied in some fields, but rarely in the field of braking. Basically, all the research on braking is simplified and limited to only two physical fields coupling because of the complexity of computation, including thermo-mechanical coupling [3][4][5][6][7] and fluid-structure coupling [8,9]. The coupled calculation of temperature field and stress field can be realized precisely by thermo-mechanical coupling, but the dynamic change of heat transfer coefficient in time and space that caused by air flow cannot be considered by this method, which will occur errors in temperature field results inevitably.…”