Modal properties of beams and plates on resilient supports with rotational and translational complex stiffness

For beam and plate vibrations, energy dissipation may be mostly attributed to internal damping inside the structure and external damping at the supports. Surface damping treatment is one of the most effective tools to control vibrations of beam and plate in general. Sometimes it is not always desirable, however, to apply this damping treatment, for practical reasons. In such cases, one must rely on the damping treatment at the supports. In this presentation, the effects of damped compliant boundary conditions on modal parameters are investigated for two types of continuous systems; an elastic beam and a circular plate. The impedances at the boundaries to translational and rotational motions are given by springs with complex stiffness. The governing equations are solved numerically to obtain the natural frequencies and modal loss factors. Numerical results are represented in dimensionless terms, based on which a procedure of selecting the support parameters is illustrated to obtain desirable modal properties. (C) 1996 Academic Press Limited
Publisher
ACADEMIC PRESS LTD
Issue Date
1996-02
Language
ENG
Keywords

ELASTICALLY RESTRAINED ENDS; VIBRATION FREQUENCIES; UNIFORM BEAM; MASS

Citation

JOURNAL OF SOUND AND VIBRATION, v.190, no.2, pp.207 - 220

ISSN
0022-460X
URI
http://hdl.handle.net/10203/2693
Appears in Collection
ME-Journal Papers(저널논문)
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