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Analytical and Experimental Studies of Impact Dampers


Masri, Sami Faiz (1965) Analytical and Experimental Studies of Impact Dampers. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/XK0P-R658.


A study is made of the general behavior of a single particle impact damper, with the main emphasis on symmetric 2 impacts/cycle motion. The exact solution for this case is derived analytically and its asymptotically stable regions are determined. The stability analysis defines the zones where the modulus of all the eigenvalues of a certain matrix relating conditions after each of two consecutive impacts is less than unity. Results of the analysis are supplemented and verified by experimental studies with a mechanical model and an analog computer. Additional numerical investigations are made with a digital computer. It is found that, under practically realizable conditions, impact damping is effective in reducing the vibration amplitude levels resulting from sinusoidal, random, or impulse-like excitation.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:(Mechanical Engineering)
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Mechanical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Crede, Charles E. (advisor)
  • Caughey, Thomas Kirk (advisor)
Thesis Committee:
  • Caughey, Thomas Kirk (chair)
  • Crede, Charles E.
  • Hudson, Donald E.
  • Sechler, Ernest Edwin
  • Iwan, Wilfred D.
Defense Date:11 May 1965
Funding AgencyGrant Number
Record Number:CaltechETD:etd-04172003-091816
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1402
Deposited By: Imported from ETD-db
Deposited On:18 Apr 2003
Last Modified:09 Feb 2024 00:52

Thesis Files

PDF (Masri_sf_1965.pdf) - Final Version
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