H. Ghoneim, APPLICATION OF THE ELECTROMECHANICAL SURFACE DAMPING TO THE VIBRATIONCONTROL OF A CANTILEVER PLATE, Journal of vibration and acoustics, 118(4), 1996, pp. 551-557
The electromechanical surface damping technique (EMSD) is applied to s
uppress the bending and twisting (torsional) peak vibration amplitudes
of a cantilever plate. The technique is a combination of the constrai
ned layer damping (CLD) and the shunted piezoelectric methods in which
the constraining layer of the CLD is replaced by a shunted piezoelect
ric ceramic. The frequency responses, to a white noise random base exc
itation, of the EMSD-treated plate at the vicinity of the first and se
cond bending and twisting resonant frequencies are determined and comp
ared 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 meth
od can be applied to extend the effective range of frequencies and/or
temperatures of the conventional CLD method. The work presented is pri
marily analytical; however, a crude and preliminary experimental work
is presented to demonstrate the feasibility of the EMSD technique.