Dynamic characteristics of traveling waves for a rotating laminated circular plate with viscoelastic core layer

2011 ◽  
Vol 330 (12) ◽  
pp. 2836-2847 ◽  
Author(s):  
Longfei Li ◽  
Xingzhe Wang ◽  
You-He Zhou
Keyword(s):  
Circular Plate ◽  
Dynamic Characteristics ◽  
Traveling Waves ◽  
Core Layer ◽  
Viscoelastic Core ◽  
Laminated Circular Plate

Versatile hybrid sandwich composite combining large stiffness and high damping: spatial patterning of the viscoelastic core layer

2017 ◽  
Vol 141 (5) ◽  
pp. 3643-3643
Author(s):  
Marta Gallo ◽  
Renaud G. Rinaldi ◽  
Laurent Chazeau ◽  
Jean-Marc Chenal ◽  
François Ganachaud ◽  
...  
Keyword(s):  
Core Layer ◽  
Sandwich Composite ◽  
Spatial Patterning ◽  
Viscoelastic Core

Dynamic analysis of three-layer cylindrical shells with fractional viscoelastic core and functionally graded face layers

2020 ◽  
pp. 107754632096622
Author(s):  
Meisam Shakouri ◽  
Mohammad Reza Permoon ◽  
Abdolreza Askarian ◽  
Hassan Haddadpour
Keyword(s):  
Natural Frequency ◽  
Equations Of Motion ◽  
Cylindrical Shells ◽  
Ritz Method ◽  
Shear Deformation Theory ◽  
Core Layer ◽  
Functionally Graded ◽  
Viscoelastic Layer ◽  
Viscoelastic Core ◽  
Graded Layers

Natural frequency and damping behavior of three-layer cylindrical shells with a viscoelastic core layer and functionally graded face layers are studied in this article. Using functionally graded face layers can reduce the stress discontinuity in the face–core interface that causes a catastrophic failure in sandwich structures. The viscoelastic layer is expressed using a fractional-order model, and the functionally graded layers are defined by a power law function. Assuming the classical shell theory for functionally graded layers and the first-order shear deformation theory for the viscoelastic core, equations of motion are derived using Lagrange’s equation and then solved via Rayleigh–Ritz method. The obtained results are validated with those in the literature, and finally, the effects of some geometrical and material parameters such as length-to-radius ratio, functionally graded properties, radius and thickness of viscoelastic layer on the natural frequency, and loss factor of the system are considered, and some conclusions are drawn.

The Free Vibration of the Magneto-Electro-Elastic Materials Laminated Circular Plate

2011 ◽  
Vol 374-377 ◽  
pp. 2193-2199 ◽  
Author(s):  
Qun Guan
Keyword(s):  
Free Vibration ◽  
Circular Plate ◽  
Single Layer ◽  
Transversely Isotropic ◽  
State Variables ◽  
Vibration Properties ◽  
Elastic Circular Plate ◽  
Symmetric Deformation ◽  
Laminated Circular Plate ◽  
The Given

In this paper, on the basis of the dynamic equation of material which contains transversely isotropic piezoelectric、piezomagnetic and elastic media, the state variables equation of piezoelectric、piezomagnetic and elastic circular plate in axial symmetric deformation is deduced. Under the given boundary conditions, according to the theorem of Caylay-Hamilton and applying the transfer matrix method, the solutions of state variables equation which are about free vibration of piezoelectric、piezomagnetic and elastic circular plate of single layer and multilayered are obtained. The calculation example indicates that from the varying law of the first natural frequency of the plate depending on the thickness-to-radius radio of the plate under varied conditions, the vibration properties of piezoelectric、piezomagnetic and laminated plate is related to the laminatation order of the material is gotten to know.

Viscoelastic Circular Plate Wave Guide Absorber

1991 ◽  
Vol 113 (3) ◽  
pp. 383-386 ◽  
Author(s):  
C. D. Hettema ◽  
Y. S. Shin ◽  
K. S. Kim
Keyword(s):  
Circular Plate ◽  
Traveling Waves ◽  
Vibrational Energy ◽  
Plate Theory ◽  
Wave Guide ◽  
Circular Plates ◽  
Plate Wave ◽  
Viscoelastic Wave

A waveguide absorber removes and dissipates vibrational energy from a structure by traveling waves. The performance of a wave guide absorber is determined by the driving point impedance. In this study a viscoelastic circular plate waveguide absorber is developed and it is shown that the driving point impedance of the viscoelastic wave guide absorber can be theoretically predicted using a Mindlin type plate theory. To validate the results of this study, viscoelastic circular plates were tested to determine their driving point impedance.

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