Smart Damping of Rotating Functionally Graded Laminated Composite Cylindrical Shells Using 1–3 Piezoelectric Composites

Abstract

AbstractThis work is devoted to studying the damping behavior of rotating functionally graded (FG) laminated cylindrical shells undergoing active constrained layer damping (ACLD) treatment comprising of viscoelastic layer sandwiched between the 1–3 piezoelectric composite (PZC) smart layer and host shell. FG cylindrical shells in laminae form consist of fibers which are aligned longitudinally in the parallel curved planes of the shell. The continuous variation of fiber angle conferring to a power law in thickness direction results into gradation of mechanical properties. To present numerical results, two types of FG shells are considered, namely a symmetric two-layered substrate with 0° orientation at top and bottom surfaces and 90° at the interface (Type-1) and asymmetric three-layered shell with 0° and 90° fiber orientation angles at the top–bottom surfaces (Type-2), respectively. The shear deformation of unit order (FSDT) has been applied for the displacement field to represent the deformation kinematics of the smart shell. The virtual work principle has been employed for arriving at the finite element (FE) motion equations of the FG laminated cylindrical (FGLC) rotating shell. To present the closed-loop frequency response characteristic of static and rotating shells, MATLAB code has been developed.KeywordsRotating cylindrical shellSmart damping1–3 Piezoelectric compositeFunctionally graded laminated composite (FGLC) shell