Forced Vibrations of Viscoelastic Timoshenko Beams

[+] Author and Article Information
C. C. Huang

Department of Mechanical Engineering, University of Western Australia, Nedlands, Western Australia

T. C. Huang

Department of Engineering Mechanics, University of Wisconsin, Madison, Wisc.

J. Eng. Ind 98(3), 820-826 (Aug 01, 1976) (7 pages) doi:10.1115/1.3439036 History: Received June 04, 1975; Online July 15, 2010


In a previous paper, the correspondence principle has been applied to derive the differential equations of motion of viscoelastic Timoshenko beams with or without external viscous damping. To study free vibrations these equations are solved by Laplace transform and boundary conditions are applied to obtain the attenuation factor and the frequency of the damped free vibrations and mode shapes. The present paper continues to analyze this subject and deals with the responses in deflection, bending slope, bending moment and shear for forced vibrations. Laplace transform and appropriate boundary conditions have been applied. Examples are given and results are plotted. The solution of forced vibrations of elastic Timoshenko beams obtained as a result of reduction from viscoelastic case and by eigenfunction expansion method concludes the paper.

Copyright © 1976 by ASME
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