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Type of Document	Dissertation
Author	Anderson, Roger Alan
URN	etd-04212003-111122
Persistent URL	http://resolver.caltech.edu/CaltechETD:etd-04212003-111122
Title	Transient response of uniform beams
Degree	PhD
Option	Engineering and Applied Science
Advisory Committee	Advisor Name Title Unknown Committee Member
Keywords	None
Date of Defense	1953-01-01
Availability	unrestricted
Abstract Several special topics relating to the transient flexural vibrations of a uniform beam predicted by the usual elementary or Bernoulli-Euler equation are discussed. The effect on the beam response of the concentration of an applied transient force in space and in time is studied. In the case of an applied step force, it is shown that the dynamic team response can be larger than twice the response to an equal force statically applied. It is demonstrated that the beam response in the higher modes is independent of the boundary conditions. A new, general series solution of the mode superposition type is given for the flexural vibrations of a uniform beam according to the more refined Timoshenko equations including the secondary effects of shear deflections and rotatory inertia. As a special case, the solution is presented for a pin-ended beam. These solutions are characterized by two series, each of the form of the series solution of the Bernoulli-Euler equation. For the special case of a concentrated transient force applied at the midpoint of a pin-ended beam, the bending moment and shear force solutions for the Timoshenko and Bernoulli-Euler equations are compared.
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