Author: Vijaykumar S Ghorade, Sanchit B. Dhotre
Abstract: Muffler is a device for reducing the amount of noise emitted by the exhaust of an internal combustion engine. Muffler is engineered as an acoustic sound proofing device designed to reduce the loudness of the sound pressure created by the engine by way of acoustic quieting. Mufflers are designed to dampen the high intensity pressure pulse generated by the combustion process from an internal combustion engine. The present work describes various exhaust noises, vibration and their contribution. Frequency, vibration and noise technique is studied through energy flow. Hence, it is necessary to study the behavior of muffler by analyzing the vibration modes and vibration response. The muffler is modeled using CATIA V5 and FEM is carried out for muffler using Altair pre-processing tool. The analysis is done using ANSYS R15.0 the frequencies and mode shapes are found. The results obtained from CAE simulation is compared with experiment using FFT analyzer. The mode shapes and frequencies are found for both without modification and with modification and the results are compared with each other.
Keywords: Muffler Silencer, FEA, ANSYS
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