Thermal examination on effect of groove geometry on train breaks thermal performance

Abstract

A moving train contains energy, known as kinetic energy, which needs to be removed from the train in order to cause it to stop.  The simplest way of doing this is to convert the energy into heat.  The conversion is usually done by applying a contact material to the rotating wheels or to discs attached to the axles.  The material creates friction and converts the kinetic energy into heat.  The wheels slow down and eventually the train stops.  The material used for braking is normally in the form of a block or pad. The vast majority of the world's trains are equipped with braking systems which use compressed air as the force to push blocks on to wheels or pads on to discs.  These systems are known as "air brakes" or "pneumatic brakes". The existing air brake system of Railway coach has the following drawbacks due to excessive brake.

Force on the brake blocks - thermal cracks on wheel tread, brake binding and reduced life of brake block. The aim of the project is to overcome the above said drawbacks by reducing the effective brake force on the brake blocks without affecting the existing designed (Braking Function) requirements. The modeling is done in computer aided design software solid works. To validate the strength of train brake,

transient thermal analysis will be done on the train brake. in thermal to find out the thermal characteristics can be analyzed. The analysis is done by applying materials steel alloys of wheels and brake pads are composite materials and modification’s will be done on geometry and above analysis will be done to provide optimistic design.