TRANSIENT THERMOELASTIC ANALYSIS OF COMPOSITE BRAKE DISKS

This paper presents a modeling analysis of transient thermoelastic beh avior occurring in composite brake disks. A finite element code was de veloped which allowed an effective investigation of the transient ther moelastic analysis. The coupled heat and elastic analysis was done usi ng the finite element method differently from other previous researche s. The result of the finite element analysis presented the pressure di stributions and the temperature distributions along the friction surfa ces, and heat flux vectors for the present model. The thermoelastic st ate on any friction surface affected the other friction surfaces each other. Thus, the whole modeling of brake disks was necessary for accur ate results. The orthotropic brake disks showed better characteristics as a brake friction material than the isotropic ones. Since the compo site multiple brake disk system showed the larger contact region of th e friction surfaces, the smoother heat flow through the contact interf aces took place. Therefore, the more uniform and lower temperatures an d the milder pressure distributions along the friction surfaces than t he isotropic multiple brake disk system was caused.