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George Reynolds Thesis.pdf (9.55 MB)
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Abstract Header
REDUCTION OF VIBRATION BY OSCILLATING BOUNDARIES AND ITS APPLICATION IN ROTORDYNAMICS
Author Info
Reynolds, George Alexander
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=miami1470319955
Abstract Details
Year and Degree
2016, Master of Science, Miami University, Mechanical and Manufacturing Engineering.
Abstract
The product life of the structural components in vibration environment can be enhanced by vibration control or isolation. In the field of rotordynamics, the rotating components of motors, pumps, turbines etc., are subjected to a range of operating speeds and they need to satisfy the industrial standards of acceptable vibrations. Traditionally, passive/ active control designs are used to minimize the undesirable vibration, which may not be feasible/economical/practical. The objective of this research is to investigate a new mechanism for reducing/eliminating/controlling the vibration by oscillating the boundaries of the structure. The hypothesis is that by oscillating the support position, the natural frequencies of the system can be manipulated in avoiding the response growth to catastrophic levels near its natural frequencies. At first, a discrete and analytical model of a vibrating beam is investigated in both time and frequency domain, to understand the relationship between the natural frequency and the support motion. This approach is extended for finite element based rotordynamic system with an oscillating bearing support. The relationship among the rotor critical speeds, bearing frequency and amplitude, and the stability of the overall system is investigated. The parametric studies are presented to demonstrate the effectiveness of this approach.
Committee
Kumar Singh, Dr. (Advisor)
Timothy Cameron, Dr. (Committee Member)
James Chagdes, Dr. (Committee Member)
Pages
136 p.
Subject Headings
Mechanical Engineering
Keywords
Rotordynamic, vibrations, modal reduction, vibration control
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Citations
Reynolds, G. A. (2016).
REDUCTION OF VIBRATION BY OSCILLATING BOUNDARIES AND ITS APPLICATION IN ROTORDYNAMICS
[Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1470319955
APA Style (7th edition)
Reynolds, George.
REDUCTION OF VIBRATION BY OSCILLATING BOUNDARIES AND ITS APPLICATION IN ROTORDYNAMICS.
2016. Miami University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=miami1470319955.
MLA Style (8th edition)
Reynolds, George. "REDUCTION OF VIBRATION BY OSCILLATING BOUNDARIES AND ITS APPLICATION IN ROTORDYNAMICS." Master's thesis, Miami University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1470319955
Chicago Manual of Style (17th edition)
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Document number:
miami1470319955
Download Count:
105
Copyright Info
© 2016, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.