Analysis of Tubular T-Connections by the Finite Element Method: Comparison with Experiments

1972 ◽  
Author(s):  
Chi-Tat Kwan ◽  
W.J. Graff
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Method Comparison ◽  
The Finite Element Method ◽  
Comparison With Experiments ◽  
Element Method

A COMPARISON OF IP ELECTRODE ARRAYS

Geophysics ◽  
1973 ◽  
Vol 38 (4) ◽  
pp. 737-761 ◽  
Author(s):  
J. H. Coggon
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Method Comparison ◽  
Horizontal Resolution ◽  
The Finite Element Method ◽  
Electrode Arrays ◽  
Depth Discrimination ◽  
Effective Depth ◽  
The Asymmetry ◽  
Element Method

The responses of dipole‐dipole, pole‐dipole, and gradient arrays to a set of ten structures have been computed using the finite element method. Comparison of the responses indicates that: (1) The dipole‐dipole array usually gives the largest anomalies, but the anomalies rarely give information on dip of a structure and are strongly influenced by overburden irregularities. This array gives best overall resolution. (2) Pole‐dipole anomalies are almost as large as dipole‐dipole ones and have the same general form but show less resolution. The lower resolution and the asymmetry of this array make results more difficult to interpret. (3) The gradient array provides dip information and good horizontal resolution. Responses to thin vertical structures are weak, anomalies are strongly affected by overburden irregularities, and there is no effective depth discrimination.

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.

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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