Fully Enclosed Wet Multi-disc Brake Of Numerical Simulation Analysis

Calculating the thermal and stress of the wet multi-disc brake is one of the maincontent in the brake designing and material selecting. Based on extensive references tothe research work and literature in this field, the research of contact condition betweentwo friction discs and the distribution rules of transient thermal field and thermal stressof traction parts were carried out.Starting from the heat conduction differential equation of instant thermal field, thispaper introduces functional thermal transmittance, construction non-linearity and contactnon-linearity of the wet multi-disc brake, explores in detail about how to solve themThe finite element model of the wet multi-disc brake was realistically constructedusing two-dimensional axisymmetric element. By necessary assumption and simplify thispaper confirmed the boundary condition of FEM model. Also the coupling of transientthermal and stress was explored sufficiently. In this paper finite element software ofANSYS was used in the analysis of contact press between two friction discs and thermalfield and stress field of friction disc during emergency braking and lasting process. Basedon the calculation results, the distribution rules of thermal field and thermal stress oftraction parts were studied. The results simulate the braking process objectively.Based on the braking energy theory this paper designs appropriate cooling systemfor the wet multi-disc brake. By FEM analysis of thermal field and stress field to verifythe rationality of the cooling system.