Vibration and damping analysis of fluid filled orthotropic cylindrical shells with constrained viscoelastic damping
TL;DR: In this article, the authors developed a finite element code based on the displacement field proposed by Wilkins et al. to find out the natural frequencies and loss factors of fluid filled cylindrical shells with a constrained viscoelastic layer in between two facings made of composite material.
About: This article is published in Computers & Structures.The article was published on 1999-02-01. It has received 43 citations till now. The article focuses on the topics: Added mass & Displacement field.
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TL;DR: A semianalytical finite element for doubly curved, multilayered shells of revolution, based on an extension of the displacement field proposed by Wilkins et al., is proposed in this paper.
24 citations
TL;DR: In this paper, the linear three-dimensional piezoelasticity theory in conjunction with the versatile transfer matrix approach is employed to investigate the steady-state nonaxisymmetric fluid-structure-coupled vibrations of an arbitrarily thick bilaminate simply supported hollow cylinder of finite length, composed of an inner layer of orthotropic functionally graded material perfectly bonded to an outer layer of radially/axially/circumferentially polarized functionally graded piezoceramic material.
Abstract: The linear three-dimensional piezoelasticity theory in conjunction with the versatile transfer matrix approach is employed to investigate the steady-state nonaxisymmetric fluid–structure-coupled vibrations of an arbitrarily thick bilaminate simply supported hollow cylinder of finite length, composed of an inner layer of orthotropic functionally graded material perfectly bonded to an outer layer of radially/axially/circumferentially polarized functionally graded piezoceramic material. The cylinder is filled with a compressible nonviscous fluid and may be subjected to arbitrary time-harmonic on-surface mechanical drives. The analytical results are illustrated with numerical examples in which water-filled homogeneous PZT4–steel composite cylinders are driven by harmonic external concentrated or distributed radial surface loads. When the outer piezoelectric layer is operating in the receiving (sensing) mode, the frequency spectrums of the induced voltage, stress components, and on-axis acoustic pressure are c...
22 citations
Cites methods from "Vibration and damping analysis of f..."
...For example, Ramasamy and Ganesan (1999) used the firstorder deformation theory to develop a semianalytical FEM model for calculating the natural frequencies and dynamic response of fluid-filled orthotropic cylindrical shells fully covered with constrained layer damping (CLD)....
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TL;DR: In this article, a new exact closed form solution for free vibration of orthotropic circular cylindrical shells with general boundary conditions by means of the method of reverberation-ray matrix (MRRM).
Abstract: In the past decades, the exact closed form solutions for the free vibration of thin orthotropic circular cylindrical shells have been merely restricted to some classical boundary conditions. Therefore, the target of the current paper is to present a new exact closed form solution for free vibration of orthotropic circular cylindrical shells with general boundary conditions by means of the method of reverberation-ray matrix (MRRM). Based on the Donnell–Mushtari shell theory, the wave solutions are constructed by the exact closed form solutions of the governing differential equations. The artificial spring technology is introduced to achieve the general boundary conditions of two end edges of shell. Hereby, the reverberation ray matrix can be easily obtained by using the MRRM together with the wave solutions, boundary conditions and dual coordinates of the orthotropic circular cylindrical shells. Then, the vibration results are obtained from the extrapolation method and golden section search (GSS) algorithm. By the comparison with other published methods and the finite element method, the accuracy of the present method is verified. On the basis of that, some new exact nature frequencies of the orthotropic circular cylindrical shells with general elastic restraints are shown which can serve as the benchmark data for the future computing method.
22 citations
TL;DR: In this article, two reduction methods are proposed to solve this problem in the frequency domain, one consists in developing added mass operators to take into account the fluid, and the second one is the use of iterative methods to calculate the coupled complex modes of the dissipative problem.
21 citations
TL;DR: In this paper, a coupled fluid structure interaction model in conjunction with uncoupled thermomechanical model is used for analysis of dynamic instability regions due to a flow of pulsating hot fluid through an insulated composite cylindrical shell.
20 citations
References
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TL;DR: In this paper, a theory for the determination of the free vibration characteristics of vertical, thin, circular cylindrical shells, partially or completely filled with stationary liquid, is presented for determining whether a shell may be uniform or non-uniform.
83 citations
TL;DR: In this paper, the effects of the shear parameter on the frequency and loss factors for various geometric properties and boundary conditions are also discussed for cylindrical shells with different core to facing thickness and length to radius ratios.
80 citations
TL;DR: In this article, an analysis of axisymmetric and unsymmetric free vibrations of conical or cylindrical shells with various boundary conditions is presented, where Love's first-approximation shell theory, with transverse shear strain added, was used and solutions were obtained by Galerkin's method.
78 citations
TL;DR: In this paper, the vibration and damping analysis of orthotropic cylindrical shells with a constrained viscoelastic core is carried out by using a finite element based on a discrete layer theory.
53 citations