Optimizing Automotive Silencer Durability: Thermal Analysis to Mitigate High Temperature Failure

Rajesh D. Bhosale 1, Prashant Singh 2 and D. S. Shelar 3, *

1 Research Scholar, Bir Tikendrajit University, Manipur, India & Lecturer, AISSMS Polytechnic, Pune, India.
2 Department of Mechanical Engineering, Bir Tikendrajit University, Manipur, India.
3 Department of Engineering Sciences, AISSMS Institute of Information Technology, Pune, Maharashtra, India.
 
Research Article
Open Access Research Journal of Science and Technology, 2025, 15(02), 102-111.
Article DOI: 10.53022/oarjst.2025.15.2.0139
Publication history: 
Received on 26 October 2025; revised on 02 December 2025; accepted on 05 December 2025
 
Abstract: 
This study analyzes and improves the heat dissipation of an exhaust silencer by modifying the inner tube geometry and evaluating the effects using simulation software. The exhaust system directs hot combustion gases away from the engine and occupants while reducing noise. High-speed exhaust flow can cause resonance and potential fatigue failure if not addressed in the design. Recent research has examined heat transfer in automotive exhaust piping to optimize aftertreatment systems. In this study, the silencer is modeled with CAD software to assess current heat dissipation. Modifications are then made to the inner tube length and perforation count. ANSYS simulations are used to analyze temperature distribution and determine the most effective configuration.
 
Keywords: 
Silencer; CFD; Temperature analysis; Finite element analysis; 3D Modeling; Contour of temperature
 
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