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. 

The Study of Elastic Strains of Parts from the Grinding Technological System

2013 ◽  
Vol 371 ◽  
pp. 101-105
Author(s):  
Maxim Casian
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Technological System ◽  
Gear Grinding ◽  
Low Stiffness ◽  
Rotational Direction ◽  
Grinding System ◽  
Elastic Strains ◽  
Element Method

In this paper we present the results of numerical simulation of the stiffness of gear grinding system using finite element method (FEM). Since the rigidity of system can be characterized by two aspects, one static and one dynamic. We will concentrate on the low stiffness of components inside the system to find errors that may affect the precision on the horizontal, vertical and rotational direction of technological system elements.

Research on Machining Accuracy in Milling Ti6Al4V Thin-Walled Component with Paraffin Reinforcement

2012 ◽  
Vol 268-270 ◽  
pp. 504-509
Author(s):  
Biao Gao ◽  
Jie Sun ◽  
Jian Feng Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Machining Accuracy ◽  
The Finite Element Method ◽  
Technical Problems ◽  
Low Stiffness ◽  
Thin Walled ◽  
Element Method

According to the technical problems such as low stiffness vibration and dimension error in milling Ti6Al4V thin-walled component, the manufacturing with paraffin reinforcement is studied. Firstly, paraffin formula for milling thin-walled component is researched. Secondly, applying the finite element method (FEM) to predict the deformation of machining with paraffin reinforcement and the corresponding milling experiments is done to check the the validity of the model. Finally, the influences of machining accuracy about different paraffin formulas for the same component are obtained. This study supplies support for the research of paraffin formula which are based on reducing the distortion of workpiece.

Force Characterization of a Rotary Motion Electrostatic Actuator Based on Finite Element Method (FEM) Analysis

2015 ◽  
Vol 761 ◽  
pp. 233-237
Author(s):  
Mariam Md Ghazaly ◽  
Tan Aik Choon ◽  
Che Amran Aliza ◽  
Sato Kaiji
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Thrust Force ◽  
Fem Analysis ◽  
Rotary Motion ◽  
Electrostatic Actuator ◽  
Electrostatic Actuators ◽  
3D Software ◽  
Element Method

Two types of rotary motion electrostatic actuators were designed and analyzed using Finite Element Method (FEM) analysis. This paper discussed the comparisons and detailed thrust force analysis of the two actuators. Both designs have similar specifications; i.e the number of rotor’s teeth to stator’s teeth ratio, radius and thickness of rotor, and gap between stator and rotor. Two structures were designed & evaluated; (a) Side-Driven Electrostatic Actuator and (b) Bottom-Driven Electrostatic Actuator. The paper focuses on comparing & analyzing the generated electrostatic thrust force for both designs when the electrostatic actuator’s parameters are varied. Ansys Maxwell 3D software is used to design and analyze the generated thrust force of the two rotary motion electrostatic actuators. The FEM analyses have been carried out by (i) varying the actuator size; (ii), varying the actuator thickness and (iii) varying the actuator teeth ratio. The FEM analysis shows that the Bottom-Drive Electrostatic Actuator exhibit greater thrust force, 4931.80μN compared to the Side-Drive Electrostatic Actuator, 240.96μN; when the actuator’s radius is 700μm, thickness is 50μm, gap between the stator and rotor is 2μm and the teeth ratio is 16:12.

scholarly journals ANALISIS STABILITAS TIMBUNAN DI ATAS KONSTRUKSI TIANG DAN GEOSINTETIK MENGGUNAKAN PROGRAM ELEMEN HINGGA

2020 ◽  
Vol 3 (3) ◽  
pp. 809
Author(s):  
Yosia Firmansyah ◽  
Andryan Suhendra
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Tensile Strength ◽  
Calculation Method ◽  
Soft Soil ◽  
Soil Characteristics ◽  
The Finite Element Method ◽  
Accurate Analysis ◽  
3D Software ◽  
Element Method

soft soil is a challenge for geotechnical engineer due to  the characteristics of the soil that cause over settlement. Geosynthetic reinforcement is used on piles to correct undesirable soft soil characteristics. This thesis will use the BS 8006 methods and 3D software that use the finite element method to compare the geosynthetic tensile strength and how geosynthetic influences the embankment. The author will use the 3D software in the hope that it will produce a more accurate analysis compared to the 2D software. This thesis will compare the calculation of the geosynthetic tensile strength with the finite element method and the BS 8006 method. This is done because the calculation method BS 8006 does not take into account the subgrade in analyzing the geosynthetic tensile strength. This geosynthetic material has been proven to reduce slippage and channel load to the pile. This reinforcement of poles and geocyntetics can increase embankment safety factor by at least 0.35. 

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.

Finite element method research of thermofriction Cutting-off with pulsed cooling

2020 ◽  
Author(s):  
K.T. Sherov ◽  
S.S. Aynabekova ◽  
S. O. Tusupova ◽  
A.A. Sagitov ◽  
E.B. Imanbaev
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Software Package ◽  
The Finite Element Method ◽  
Cutting Mechanism ◽  
3D Software ◽  
Deform 3D ◽  
Element Method

The results of a study of the thermofriction cutting-off method with pulsed cooling, obtained by modeling the process by the finite element method using the Machining module of the Deform 3D software package, are presented. The hypothesis put forward earlier about the cutting mechanism with this method is confirmed. Keywords thermofriction cutting-off, pulsed cooling, finite element method, cutting mechanism. [email protected]

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.

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