Semianalytical finite element analysis of active constrained layer dampingin cylindrical shells of revolution

Citation
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
Citations number
19
Categorie Soggetti
Civil Engineering
Journal title
COMPUTERS & STRUCTURES
ISSN journal
00457949 → ACNP
Volume
79
Issue
11
Year of publication
2001
Pages
1131 - 1145
Database
ISI
SICI code
0045-7949(200104)79:11<1131:SFEAOA>2.0.ZU;2-G
Abstract
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.