Analysis of active damping in composite laminate cylindrical shells of revolution with skewed PVDF sensors/actuators

Abstract Active damping in a FRP composite cylindrical shell with collocated piezoelectric sensors/actuators is studied. The electrode on the sensors/actuators are spatially shaped to reduce spillover between circumferential modes. A three noded, isoparametric, semianalytical finite element is developed and used to model the cylindrical shell. The element is based on a mixed piezoelectric shell theory which makes a single layer assumption for the displacements and a layerwise assumption for the electric potential. The effects of location of patch of collocated piezoelectric sensors/actuators, percentage length of the shell covered with these patches, fiber angle of the laminae in the composite laminate, stacking sequence of laminae in a laminate and skew angle of the sensor/actuator piezoelectric material, on the system damping for various modes is studied.

[1]  Cheng-Kuo Sung,et al.  Piezoelectric Modal Sensor/Actuator Design for Monitoring/Generating Flexural and Torsional Vibrations of Cylindrical Shells , 1996 .

[2]  Dimitris A. Saravanos,et al.  Mixed Laminate Theory and Finite Element for Smart Piezoelectric Composite Shell Structures , 1997 .

[3]  Izhak Sheinman,et al.  Coupling Between Symmetric and Antisymmetric Modes in Shells of Revolution , 1987 .

[4]  H. S. Tzou.  Distributed Modal Identification and Vibration Control of Continua: Theory and Applications , 1990, 1990 American Control Conference.

[5]  Francis C. Moon,et al.  Modal Sensors/Actuators , 1990 .

[6]  H. S. Tzou,et al.  Analysis of piezoelastic structures with laminated piezoelectric triangle shell elements , 1996 .

[7]  Horn-Sen Tzou,et al.  Parametric study of segmented transducers laminated on cylindrical shells, part 1: Sensor patches , 1996 .

[8]  I. Y. Shen.  Stability and Controllability of Euler-Bernoulli Beams With Intelligent Constrained Layer Treatments , 1996 .

[9]  Dimitris A. Saravanos,et al.  Layerwise mechanics and finite element model for laminated piezoelectric shells , 1996 .

[10]  Horn-Sen Tzou,et al.  Sensor Mechanics of Distributed Shell Convolving Sensors Applied to Flexible Rings , 1993 .

[11]  Baruch Pletner,et al.  Consistent Methodology for the Modeling of Piezolaminated Shells , 1997 .

[12]  R. Cook,et al.  Concepts and Applications of Finite Element Analysis , 1974 .

[13]  J. Callahan,et al.  Vibration monitoring of cylindrical shells using piezoelectric sensors , 1996 .

[14]  Paul R. Heyliger,et al.  DISCRETE LAYER ANALYSIS OF AXISYMMETRIC VIBRATIONS OF LAMINATED PIEZOELECTRIC CYLINDERS , 1996 .

[15]  Francis C. Moon,et al.  Laminated piezopolymer plates for torsion and bending sensors and actuators , 1989 .

[16]  Horn-Sen Tzou,et al.  A Piezothermoelastic Thin Shell Theory Applied to Active Structures , 1994 .