Spectral/finite-element calculations of the flow of a maxwell fluid between eccentric rotating cylinders

The paper reported a study on an effect of the point charge of the bio-interface of a nanowire field biosensor on the conductance of the nanowire, through finite element calculations using COMSOL Multiphysics. A model with 5 layers starting with silicon nanowire of radius 10nm surrounded by a 2-nm oxide layer, and the oxide layer were surrounded by a 5 nm thick functional layer and 2 points charge were considered for this study and last layer is for electrolyte. The results shows that is different voltages with points change is that effected on the conductance of nanowire that is clear from different of potential distribution of point charge.

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Exact analysis of the bending of wide beams by a modified elastica approach

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406211417753 ◽

2011 ◽

Vol 225 (11) ◽

pp. 2759-2764 ◽

Cited By ~ 8

Author(s):

L F Campanile ◽

R Jähne ◽

A Hasse

Keyword(s):

Finite Element ◽

Substantial Reduction ◽

Short Review ◽

Computational Effort ◽

Two Dimensional ◽

Finite Element Calculations ◽

Dimensional Finite Element ◽

Wide Beams ◽

Insight Into ◽

Selection Of

Classical beam models do not account for partial restraint of anticlastic bending and are therefore inherently inaccurate. This article proposes a modification of the exact Bernoulli–Euler equation which allows for an exact prediction of the beam's deflection without the need of two-dimensional finite element calculations. This approach offers a substantial reduction in the computational effort, especially when coupled with a fast-solving schema like the circle-arc method. Besides the description of the new method and its validation, this article offers an insight into the somewhat disregarded topic of anticlastic bending by a short review of the published theories and a selection of representative numerical results.

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Incompressibility and mesh sensitivity analysis in finite element simulation of rubbers

International Review of Applied Sciences and Engineering ◽

10.1556/1848.2016.7.1.2 ◽

2016 ◽

Vol 7 (1) ◽

pp. 7-12 ◽

Cited By ~ 2

Author(s):

D. Huri

Keyword(s):

Finite Element ◽

Material Characterization ◽

Numerical Stability ◽

Material Parameters ◽

Linear Finite Element ◽

Element Simulation ◽

Finite Element Calculations ◽

Mesh Density ◽

Rubber Component

Non-linear finite element calculations are indispensable when important information of the material response under load of a rubber component is desired. Although the material characterization of a rubber component is a demanding engineering task, the changing contact range between the parts and the incompressibility behaviour of the rubber further increase the complexity of the investigations. In this paper the effects of the choice of the numerical material parameters (e.g. bulk modulus) are examined with regard to numerical stability, mesh density and calculation accuracy. As an example, a rubber spring is chosen where contact problem is also handled.

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A Spectral Finite Element Model for Wave Propagation Analysis in Laminated Composite Plate

Journal of Vibration and Acoustics ◽

10.1115/1.2203338 ◽

2006 ◽

Vol 128 (4) ◽

pp. 477-488 ◽

Cited By ~ 37

Author(s):

A. Chakraborty ◽

S. Gopalakrishnan

Keyword(s):

Finite Element ◽

Wave Propagation ◽

Shear Deformation ◽

Mechanical Response ◽

Laminated Composite ◽

Wave Number ◽

Single Element ◽

Element Formulation ◽

Frequency Wave ◽

Spectral Finite Element

A new spectral plate element (SPE) is developed to analyze wave propagation in anisotropic laminated composite media. The element is based on the first-order laminated plate theory, which takes shear deformation into consideration. The element is formulated using the recently developed methodology of spectral finite element formulation based on the solution of a polynomial eigenvalue problem. By virtue of its frequency-wave number domain formulation, single element is sufficient to model large structures, where conventional finite element method will incur heavy cost of computation. The variation of the wave numbers with frequency is shown, which illustrates the inhomogeneous nature of the wave. The element is used to demonstrate the nature of the wave propagating in laminated composite due to mechanical impact and the effect of shear deformation on the mechanical response is demonstrated. The element is also upgraded to an active spectral plate clement for modeling open and closed loop vibration control of plate structures. Further, delamination is introduced in the SPE and scattered wave is captured for both broadband and modulated pulse loading.

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