Bending and twisting vibration control of a cantilever plate via electromechanical surface damping

Hany Ghoneim

doi:10.1117/12.208907

5 May 1995 Bending and twisting vibration control of a cantilever plate via electromechanical surface damping

Hany Ghoneim

Proceedings Volume 2445, Smart Structures and Materials 1995: Passive Damping; (1995) https://doi.org/10.1117/12.208907
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

The electromechanical surface damping technique (EMSD) is applied to suppress the bending and twisting peak vibration amplitudes of a cantilever plate. The technique is a combination of the constrained layer damping (CLD) and the shunted piezoelectric methods in which the constraining layer of the CLD is replaced by a shunted piezoelectric ceramic. The frequency responses, to a white noise random base excitation, of the EMSD-treated plate at the vicinity of the first and second bending and twisting resonant frequencies are determined and compared with the corresponding responses of the CLD-treatment. It is shown that, in general, the EMSD treatment provides more suppression of the bending and twisting peak vibration amplitudes than the conventional CLD treatment. The EMSD treatment, however, is more effective at higher frequencies and lower temperatures, which suggests that the EMSD method can be applied to extend the effective range of frequencies and/or temperatures of the conventional CLD method. The work presented is primarily analytical, however crude and preliminary experimental results are presented in order to demonstrate the feasibility of the EMSD technique.

Citation Download Citation

Hany Ghoneim "Bending and twisting vibration control of a cantilever plate via electromechanical surface damping", Proc. SPIE 2445, Smart Structures and Materials 1995: Passive Damping, (5 May 1995); https://doi.org/10.1117/12.208907

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