Structure-borne sound transmission through plate junctions and estimates of sea coupling loss factors using the finite element method

1991 ◽  
Vol 144 (2) ◽  
pp. 215-227 ◽  
Author(s):  
C. Simmons
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Sound Transmission ◽  
Coupling Loss ◽  
The Finite Element Method ◽  
Loss Factors ◽  
Element Method

The Frequencies and Damping of a Cantilever Composite Plate With a Viscoelastic Layer

1995 ◽  
Author(s):  
P. Cupiał ◽  
J. Nizioł
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Ritz Method ◽  
Method Comparison ◽  
Viscoelastic Layer ◽  
The Finite Element Method ◽  
Complex Eigenvalues ◽  
Geometric Boundary ◽  
Loss Factors ◽  
Element Method

Abstract In the paper the natural frequencies and modal loss factors of a three-layered rectangular cantilever plate with high-modulus composite face layers and a viscoelastic mid-layer are discussed. Two analysis approaches are considered, the Ritz method and the finite element method. The Ritz analysis is based on an appropriate 2-D plate model. Algebraic polynomials are used which satisfy the necessary geometric boundary conditions. The discretized eigenvalue problem is then solved for complex eigenvalues, from which damped frequencies and modal loss factors are extracted. Both frequencies and loss factors are shown to converge with an increasing number of the polynomials used. Apart from the Ritz method, frequencies and modal loss factors are calculated by the finite element method based on the so-called strain energy method. Comparison between the two approaches is then given.

Vibration and Damping Analysis of Cylindrical Shells With Constrained Damping Treatment—A Comparison of Three Theories

1995 ◽  
Vol 117 (2) ◽  
pp. 213-219 ◽  
Author(s):  
T. C. Ramesh ◽  
N. Ganesan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Loss Factor ◽  
Cylindrical Shells ◽  
The Finite Element Method ◽  
The Core ◽  
Constrained Damping ◽  
Loss Factors ◽  
Element Method

Cylindrical shells with a constrained damping layer treatment are studied using three theories. The finite element method is made use of in the study. The nondimensional frequencies and loss factors predicted by the three theories are compared and the theories are evaluated. The importance of inclusion of the extensional effects in the core and its effect on the loss factor is brought out in this study.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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