It has been observed here in structural analysis of both type (perforated and non-perforated) silencer where
stress developed at discontinuity. These stresses is not depend only upon inside pressure of exhaust gases but
also extremely affected by temperature of gases. Total deformation is much larger at used pressure and
temperature parameter. There were generated different types of stress, strains, and the deformation. The two
kinds analysis were disused was structural analysis. The results of the two silencer perforated and nonperforated
were analyzed