Muffler design with baffle effect and performations on transmission loss

• Autorzy: Kamarkhani S. , Mahmoudi Kohan A.
• Języki publikacji: EN

Abstrakty

EN

A typical sound generated by vibrational waves is usually based on the experience and design experience, which can be enhanced by optimizing the internal structure of the exhaust system. The use of baffles and perforations has a significant effect on reducing the transmission loss in a silencer exhaust system. In order to evaluate the response effect of a silencer, the effect of baffle and perforations, without baffles and perforations, was evaluated in COMSOL5.2 software. Which results in numerical results with close experimental results and the effect of buffaloes and perforations, have shown a good reduction in transmissibility, and their partial differences are due to the features of geometry design.

Słowa kluczowe

EN

FEM; reactive muffler; absorptive muffler; transmission loss

PL

FEM; tłumik reaktywny; tłumik absorpcyjny; straty przesyłowe

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 22, nr 4
• Strony: 1337--1343
• Opis fizyczny: Bibliogr. 10 poz., il. kolor., wykr.

Twórcy

autor

Kamarkhani S.

• School of Automotive Engineering, Iran University of Science and Technology

autor

Mahmoudi Kohan A.

• Faculty of Mechanical Engineering, Malek-Ashtar University of Technology, Tehran, Iran

Bibliografia

• [1] Shojaeifard, M. H., Ebrahimi-Nejad, S., Kamarkhani, S.: Optimization of Exhaust System Hangers for Reduction of Vehicle Cabin Vibrations, Int. J. Automot. Eng., 7, 1, 2017.
• [2] Considine, G. D.: Transmission Loss, Van Nostrand's Sci. Encycl., 9, 79, 2005.
• [3] Zhou, Z., Copiello, D.: Simulation of exhaust line noise using FEM and TMM, Sound Vib., September, 2013.
• [4] Huh, M. S., Mo, J. Y., Oh, S. K., Kim, J. R., Park, C. W.: A Study on the Analysis and Improvement of the Acoustic Characteristics of the Muffler in Compressor, Purdue University Libraries, 1994.
• [5] Vasile, O.: Finite Element Analysis of Acoustic Pressure Levels and Transmission Loss of a Muffler, academia.edu, 43-482012.
• [6] General Design Principles for an Automotive Muffler, Introduction to an Automotive, November, 153-158, 2005.
• [7] Kore S., et al.: Performance Evaluation of a Reactive Muffler Using CFD, Addis Ababa University, 28, 2011.
• [8] Eads, K., Haghighi, K., Kim, H., Grace, J. M.: Finite Element Optimization of an Exhaust System, SAE 2000 World Congress, 724, 2016.
• [9] Elsayed, A., Bastien, C., Jones, S., Christensen, J., Medina, H., Kassem, H.: Investigation of baffle configuration effect on the performance of exhaust mufflers, Case Stud. Therm. Eng., 10, C, 86-94, 2017.
• [10] Bhadke, P. B., Mahajan, K. A.: Effect of Change in Diameter on Muffler Transmission loss using COMSOL, IOSR J. Mech. Civ. Eng., March, 2278-1684, 2017.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).