Design and Analysis of an Inertia Device for the Attenuation of Vibrations in an Automotive Exhaust System

Identifier

6482

Author

Matthew J. Markham

Date

2019

Document Type

Thesis (Access Restricted)

Degree Name

Master of Science

Major

Mechanical Engineering

Committee Chair

Steve F. Wayne

Abstract

The purpose of this study was to develop, test, and analyze the Dynamic Vibration Resonator (DVR), a spring-mass device which attaches between exhaust pipes and serves to reduce "cabin drone" in vehicles. The DVR was lab and field tested and shown to effectively attenuate vibrations in two important frequency ranges: 164-167 Hz and 183-188 Hz. A generalized vibration model of the DVR was formulated and used to determine the contribution of DVR components, of which the central mass geometry, main carrier rod and brackets were identified as being critical to vibrational response. Finite element analysis (FEA) was used to predict the natural frequencies of the DVR and correlated within 5% error to experimental measurements. A fully parametric CAD model of the DVR and Fortran solution code for solving the vibration equations are presented.

Comments

Data is provided by the student.

Library Comment

Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

Recommended Citation

Markham, Matthew J., "Design and Analysis of an Inertia Device for the Attenuation of Vibrations in an Automotive Exhaust System" (2019). Electronic Theses and Dissertations. 2232.
https://digitalcommons.memphis.edu/etd/2232