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NUMERICAL ANALYSIS OF LUMPED PARAMETER DYNAMIC SYSTEMS WITH FRICTION

KONDEPUDI, RAMABALARAJENDRASESH
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1083622496

Abstract Details

2004, MS, University of Cincinnati, Engineering : Mechanical Engineering.
Friction has been a complicated subject to understand for many years. Much can be attributed to the complex, non-linear nature of friction and its implicit influence on the system parameters. Besides research pointed at understanding the fundamental principles and characters of friction, the interaction of friction dynamics and system dynamics has been a study of much interest. This work covers the interaction of friction and system dynamics. Two different models involving dry friction, distinguished by the number of DOF have been studied: - Single-DOF model with external excitation (Den Hartog’s model) - Two-DOF model with external excitation (Extension of Pratt & William’s model). The first model is studied to understand the general response characteristics like stick-slipbecause of friction and external forces. The latter part of this work is an extension to the second model. The results obtained have been validated with earlier works to show more confidence in the observations made thereafter. The difference in the system parameters on the masses brings asymmetry in the system. This is studied in the joint problem. Two resonant peaks are observed in the FRF plot for an unsymmetrical system; the resonant frequency peaks shift farther from each other with increasing unsymmetry in the system. Also, the influences of normal load and excitation frequency on the percentage stick, energy dissipation and frequency shifts are studied. Better understanding of the joint dynamics with friction interfaces provides necessary insight into the uses and effects of friction damping so as to increase the energy dissipation and minimize unwanted response.
Dr. Edward Berger (Advisor)
83 p.
Dry Friction; Stick-Slip; Lumped-Parameter Models; Vibration damping; Friction Damping; Passive Damping; Semi-Active Damping; Numerical Analysis

Recommended Citations

Citations

  • KONDEPUDI, R. (2004). NUMERICAL ANALYSIS OF LUMPED PARAMETER DYNAMIC SYSTEMS WITH FRICTION [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1083622496

    APA Style (7th edition)

  • KONDEPUDI, RAMABALARAJENDRASESH. NUMERICAL ANALYSIS OF LUMPED PARAMETER DYNAMIC SYSTEMS WITH FRICTION. 2004. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1083622496.

    MLA Style (8th edition)

  • KONDEPUDI, RAMABALARAJENDRASESH. "NUMERICAL ANALYSIS OF LUMPED PARAMETER DYNAMIC SYSTEMS WITH FRICTION." Master's thesis, University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1083622496

    Chicago Manual of Style (17th edition)

ucin1083622496
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© 2003, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.