Design Of Csic Composite Brake Disc For Aalrt Finite Element Method

Railway Engineering Project Topics

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Gray cast iron is commonly used brake disc material with high density that increase fuelrnconsumption. It also generates heat easily during braking due to its lower specific heat capacityrnwhich affects its mechanical properties. The ever increasing demand for high speed trains fromrnpassengers and reduction of maintenance costs by operators means a compelling need to developrnnew disc brake materials with higher friction performance and longer service life. An interestingrnalternative are C/SiC composite materials characterized by lower wear rate and higher resistancernto thermal shock. During braking kinetic energy transforms in to thermal energy resulting tornintense heat and high temperature in the brake disc-pad interface. Thus, induced thermal loadsrndetermine thermo-elastic behavior of the railway disc brake structure. rnThis paper is mainly concerned with design analysis of C/SiC composite material to study andrnevaluate the performance under severe braking conditions and there by assist in brake disc designrnand analysis. Geometric dimensions of AA LRT train disc are taken on to CATIA where the 3Drnmodel is imported to ANSYS for determining the temperature distribution, variation of stressesrnand deformation produced in the disc brake after applying the boundary conditions. The mainrnboundary and initial condition are the heat flux on the braking surface of the disc and the force ofrnthe brake clamps. Two different disc designs are used, one solid and other the ventilated existingrnone to demonstrate the material response for each variant. The aim is to investigate the structuralrndeformation of the brake disc due to combined effect of thermal expansion when subjected torntemperature change during the braking cycle and thereby assist the railway industry in developingrnoptimum and effective disc brake material. The results were found to be satisfactory.

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Design Of Csic Composite Brake Disc For Aalrt  Finite Element Method