Dj. Spearritt et Sf. Asokanthan, TORSIONAL VIBRATION CONTROL OF A FLEXIBLE BEAM USING LAMINATED PVDF ACTUATORS, Journal of sound and vibration, 193(5), 1996, pp. 941-956
This paper describes a theoretical and experimental development of a l
aminated spatially distributed piezoelectric torsional vibration actua
tor for a clamped-free cantilever beam. The strain energy transferred
from a piezoelectric film actuator to a substructure is derived as a f
unction of actuator strain only and is then used to calculate the indu
ced strain in a substructure loaded in uniaxial extension/compression,
bending and torsion. This transferred energy can be maximized by opti
mizing the actuator/structure dimensions and material properties. An e
xperimental cantilever beam was constructed to examine the first mode
decay in torsion under the influence of the actuators. The theoretical
and experimental decay histories of the first torsion mode decay indi
cate a reduction in decay time for the controlled beam of greater than
10 times that of the uncontrolled beam. (C) 1996 Academic Press Limit
ed