Vibration Analysis of Two Wheeler Muffler by using FEA Software

Automotive Muffler is a device used to reduce the noise produced by the engine. Muffler is used in automobile vehicles to reduce the noise produced by the exhaust gases of the engine. Muffler is also used in many other engines and generators. The size, shape and construction vary according to the type and size of the engine. The primary function of the muffler is to reduce engine noise emission. A reactive muffler generally consists of a series of resonating and expansion chambers that are designed to reduce the sound pressure level at certain frequencies. The inlet and outlet tubes are generally offset and have perforations that allow sound pulses to scatter out in numerous directions inside a chamber resulting in destructive interference. On the other hand, an absorptive or dissipative muffler uses absorption to reduce sound energy. Sound waves are reduced as their energy is converted into heat in the absorptive material. For both the types of mufflers, uniform distribution of heat is desirable.