Finite Element of a Smart Beam with Piezoelectric Patches using Electroelastic Formulation

2009 ◽  
Author(s):  
S.N. Ahmad ◽  
C.S. Upadhyay ◽  
C. Venkatesan
Keyword(s):  
Finite Element ◽  
Smart Beam

scholarly journals State-Space Modeling and Active Vibration Control of Smart Flexible Cantilever Beam with the Use of Finite Element Method

2020 ◽  
Vol 10 (6) ◽  
pp. 6549-6556
Author(s):  
K. G. Aktas ◽  
I. Esen
Keyword(s):  
Finite Element ◽  
Vibration Control ◽  
State Space ◽  
Cantilever Beam ◽  
Active Vibration Control ◽  
Sensors And Actuators ◽  
Sensor Actuator ◽  
Lqr Controller ◽  
Smart Beam ◽  
Active Vibration

The aim of this study is to design a Linear Quadratic Regulator (LQR) controller for the active vibration control of a smart flexible cantilever beam. The mathematical model of the smart beam was created on the basis of the Euler-Bernoulli beam theory and the piezoelectric theory. State-space and finite element models used in the LQR controller design were developed. In the finite element model of the smart beam containing piezoelectric sensors and actuators, the beam was divided into ten finite elements. Each element had two nodes and two degrees of freedom were defined for each node, transverse displacement, and rotation. Two Piezoelectric ceramic lead Zirconate Titanate (PZT) patches were affixed to the upper and lower surfaces of the beam element as pairs of sensors and actuators. The location of the piezoelectric sensor and actuator pair changed and they were consecutively placed on the fixed part, the middle part, and the free end of the beam. In each case, the design of the LQR controller was made considering the first three dominant vibratory modes of the beam. The effect of the position of the sensor-actuator pair on the beam on the vibration damping capability of the controller was investigated. The best damping performance was found when the sensor-actuator pair was placed at the fixed end.

Analysis for Smart Beam with Secondary Converse Piezoelectric Effect

2015 ◽  
Vol 738-739 ◽  
pp. 151-154
Author(s):  
Yong Zhou ◽  
Shi Li ◽  
Liang Bin Xie
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Variational Principle ◽  
Piezoelectric Effect ◽  
The State ◽  
Linear Element ◽  
Vector Equation ◽  
Laminated Beam ◽  
Smart Beam ◽  
Converse Piezoelectric Effect

Based on variational principle, the state-vector equation is established for driving analysis of a laminated beam with piezoelectric actuating layers. The beam are considered as a 2D line solid and the linear element is used. The influence of secondary converse piezoelectric effect (SCPE) on the displacement of the laminated beam is investigated. The state space finite element method is utilized to predict the deflection of the beam considering SCPE or not. If the influence of SCPE is eliminated, the displacement of the clamped beam increase by ∼2.7%. Furthermore, the effects with different PZT/steel thickness ratio considering SCPE are also studied.

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.

A Finite Element Model for the Design of Local Skin Flaps

1986 ◽  
Vol 19 (4) ◽  
pp. 807-824
Author(s):  
Wayne F. Larrabee ◽  
J.A. Galt
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Skin Flaps ◽  
Local Skin

Introduction to Finite Element Vibration Analysis

2010 ◽  
Author(s):  
Maurice Petyt
Keyword(s):  
Finite Element ◽  
Vibration Analysis

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde

Finite element modeling of laser-generated ultrasound with application to defect detection

2014 ◽  
pp. 141008191338004
Author(s):  
Peyman Soltani ◽  
Negar Akbareian
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Defect Detection ◽  
Element Modeling
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