scholarly journals Assessment of electric potential generated during lightning strike by finite element method

2016 ◽  
Vol 11 (2) ◽  
pp. 15-28
Author(s):  
Larisa Mariut ◽  
Elena Helerea
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Potential ◽  
Lightning Strike ◽  
Element Method

The Dynamic Response of a Rotating Thick Piezoelectric Plate with Thermal Relaxations

2011 ◽  
Vol 52-54 ◽  
pp. 1565-1570
Author(s):  
Hui Min Li ◽  
Ying Mei Wang ◽  
Bing Yao Wang ◽  
Tian Hu He
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Electric Potential ◽  
Integral Transform ◽  
Piezoelectric Plate ◽  
Dimensionless Temperature ◽  
Dimensionless Displacement ◽  
Thermoelastic Theory ◽  
Element Method

Based on the generalized thermoelastic theory postulated by Green and Lindsay(G-L), the dynamic response of an infinite rotating piezoelectric plate subject to thermal shocks on both up and bottom surfaces was investigated. To avoid the calculation precision loss caused by the integral transform technique, the so-called direct finite element method was used to solve the governing equations in time domain directly. The distributions of the dimensionless temperature, stress, displacement and electric potential were presented graphically. The results show that the direct finite element method provides an effective way for achieving high calculation precision in solving the generalized piezoelectric-thermoelastic problem. The results also show that the rotation effect tends to decrease the dimensionless displacement and electric potential and barely affects the dimensionless temperature and stress.

scholarly journals Finite element analysis of the voltage induced by a pair of electrodes in a cell membrane

2022 ◽  
Vol 2153 (1) ◽  
pp. 012012
Author(s):  
D F Devia ◽  
F Mesa ◽  
D M Devia
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Potential ◽  
Electric Pulse ◽  
Two Dimensional ◽  
The Finite Element Method ◽  
Element Analysis ◽  
A Cell ◽  
Dimensional Domain ◽  
Element Method

Abstract This document analyses the distribution of the electric potential due to two electrodes that excite a membrane. The solution obtained numerically was approximated by means of the finite element method. The qualitative analysis of the results allows to know the intensity of the electric potential along the membrane in such a way that said electrodes that excite the membrane can be strategically located for academic and clinical purposes. Additionally, in a two- dimensional domain that represents the geometry of a membrane, the finite element method was executed, which allowed the behavior of the potential to be analyzed for an electric pulse at any point in the membrane. The above was generated by two electrodes.

scholarly journals Design and simulation of an optimized electrothermal microactuator with Z-shaped beams

2015 ◽  
Vol 25 (3) ◽  
pp. 19-24
Author(s):  
Margarita Tecpoyotl Torres ◽  
Ramón Cabello Ruiz ◽  
José Gerardo Vera Dimas
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Potential ◽  
Solid Modeling ◽  
Output Force ◽  
Load Sensor ◽  
Low Stiffness ◽  
3D Software ◽  
Determinant Factor ◽  
Element Method

The displacement of the central shuttle of a Z-shape chevron actuator can be calculated using a developed approach from other authors. Who demonstrated that the actuators with this geometry offer a larger displacement compared with V-shape actuators. Z-shape offers a larger stiffness and output force for the case of only one arm.  This paper is focused on the optimization of the Z-shaped beams of a chevron actuator of eight beams, which seeks to increase the previously described response. The structure is designed in parametric solid modeling 3D software Autodesk Inventor, and simulated by finite element method in Ansys 15.0. These simulations were implemented considering several modifications on the length of the Z-shaped beams in order to choose the most appropriate length. The electric potential applied in all cases was from 0.2 V up to 5 V. The Z-shape length of the arms for the case of the optimized Z-shape actuator increases the shuttle’s displacement in approximately 50% compared to V-shape actuator, and 38% compare to the original Z-shape. Analytical adjusted approach is extremely matched with the simulations results. Length of the Z-shape beam is the determinant factor of the displacement. The low stiffness of the optimized Z-shape actuator (89% lower than the original V-shape and 58% compared to Z-shape) can allow its use as load sensor. 

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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