Vibration Analysis of Exhaust System

The Paper deals with the vibrational study of the exhaust system with the concept of CAE. The vibrations of exhaust system are due to the engine excitation, braking, and mainly due to the road excitation. The modal analysis is carried out to find the natural frequencies and the mode shapes. & the behaviour of the mode shapes is also studied. The shell and solid elements are used to get better results in modal frequency domain. Further frequency response is carried out by this vibration amplitude of exhaust system (displacement vs frequency graph) were obtained, for different positions on the exhaust system. The exhaust system is modelled using Catia, hypermesh for discretise and Abaqus as solver. The main methodology taken here to find the maximum amplitude for various frequencies at different positions on Exhaust system. After identification of the max displacement (amplitude) the mode shapes were studied/analysed to identify better hanger location.