Search Results

Coating is very important in some applications particularly disc brakes that are most commonly used in the passenger cars. Slotted friction material also has a great effect on the behaviour of the disc brake friction. Mixing between the coated rotor and the slotted material is of importance to improve the frictional behaviour of the disc brake. Slotted material used in this work is divided into two parts; each part has leading and trailing edge to give the advantages of using two pads in a single braking action. Simulating the kinetic energy of a passenger car to measure the friction force between the disc and pad at different operating conditions have been designed in a test rig. The effect of thermal loading at the sliding interface between the different friction material and the rotor of Floating Calliper Disc Brake (FCDB) has been studied in this work.

An approach to the behavioral analysis of the friction material (pad) is presented that is based mainly on the Finite Element Methods representation. This Finite Element Method was used to predict the deformation of the friction material and also the pressure distribution across the contact area with the rotor. The influence of the friction material compressibility, back-plate thickness, backplate stiffness, and the piston diameter were considered. The effect of the piston pressure on the back-plate was also considered to study the behavior of the friction material. The modal analysis of the friction material was also discussed. The results showed that in order to evaluate the design performance of the disc brake, most of the components should be fully design controlled and the distributions of the nodal reaction force may affect the wear happen in the friction material.