Abstract

 Noise and vibration associated with the braking process in passenger automobiles has become an important economicand technological problem in the industry. The knowledge of natural frequencies of components is of great interest inthestudyofresponse of structures to various excitations. Hence a brake disc plate with central hole, fixed at inner edge and free at outeredgeis chosen and its dynamic response is investigated. The objective of current work is to analyze the vibration characteristicsasnatural frequency, mode shapes of brake disc by shape optimization but with same ratios of inner to outer radius for inneredgeclamped and outer edge free boundary condition. FEM software package is used for vibration analysis of brake discs withdrilledholes with same boundary condition for determining different parameters like Natural frequency, Mode shapes. The discbrakeismodeled using commercial computer aided design (CAD) software, Ansys. Keywords: Vibration , disc brakes, mode shapes