C. Saravanan et al., Semianalytical finite element analysis of active constrained layer dampingin cylindrical shells of revolution, COMPUT STRU, 79(11), 2001, pp. 1131-1145
Active constrained layer damping in cylindrical shells of revolution are st
udied. A three noded, isoparametric, multilayered, semianalytical finite el
ement is developed and used. A layerwise theory is assumed For the thicknes
s Variation of the displacements and electric potential. The electrodes on
the sensors/actuators are spatially shaped to reduce spillover between circ
umferential modes. The effect of axial and circumferential mode numbers, fe
edback factor, length to radius ratio, radius to thickness ratio of the she
ll, percentage area of the shell covered with collocated piezoelectric sens
ors/actuators and the axial location of the collocated sensors/actuators, o
n the damping ratio of the cylindrical shells of revolution are studied. A
comparison is also made between the active constrained layer damping and th
e conventional passive constrained layer damping treatments for the class o
f shells considered. (C) 2001 Elsevier Science Ltd. All rights reserved.