Finite element analysis of piezoelectric actuator with PMN–PT single crystals for nanopositioning

2006 ◽  
Vol 6 (6) ◽  
pp. 1064-1067 ◽  
Author(s):  
K.C. Kim ◽  
Y.S. Kim ◽  
H.J. Kim ◽  
S.H. Kim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Single Crystals ◽  
Piezoelectric Actuator ◽  
Element Analysis

Investigation of Strain Hardening in NiAl Single Crystals Using Three-Dimensional FEA Models

1999 ◽  
Vol 123 (1) ◽  
pp. 20-27 ◽  
Author(s):  
Chulho Yang ◽  
Ashok V. Kumar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Strain Hardening ◽  
Single Crystals ◽  
Three Dimensional ◽  
High Rate ◽  
Large Strains ◽  
Slip Systems ◽  
Element Analysis ◽  
Hardening Model

Single crystals of NiAl are very ductile at intermediate temperatures (400–700 K) and were observed to exhibit high strain hardening rates at large strains when loaded in the [110] orientation. The experimentally observed strain hardening in NiAl single crystals could not be predicted using simple hardening models and two-dimensional finite element analysis. The primary slip systems that activate during the deformation are (010)[100] and (100)[100], however, it has been hypothesized that activation of secondary slip on {011} slip planes may be responsible for the high rate of hardening observed. The hardening of intermetallic single crystals when multiple slip systems are activated is not well understood. To study this further, a three-dimensional hardening model and constitutive equations were implemented into a finite element analysis program. Since the parameters required to describe the hardening model such as latent hardening ratios are difficult to obtain experimentally, a parametric study was conducted to estimate values for these parameters that enable the prediction of the experimentally observed load versus elongation curves.

Finite Element Analysis of Cantilever Beam for Optimal Placement of Piezoelectric Actuator

2011 ◽  
Vol 110-116 ◽  
pp. 4212-4219
Author(s):  
Abhay M. Khalatkar ◽  
Rakesh H. Haldkar ◽  
V.K. Gupta
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cantilever Beam ◽  
Piezoelectric Actuator ◽  
Smart Structures ◽  
Piezoelectric Actuators ◽  
Small Scale ◽  
Cantilever Plate ◽  
Element Analysis ◽  
Plate Structure

There is increasing demand for developing smart structures in various electronic and electromechanical systems during past two decades. The modeling analyzing and manufacturing of these small-scale components remained always a challenging job. Finite element capability available in commercial software package ANSYS makes it convenient to perform modeling and analyzing of these smart structures. In this study a 3-D finite element analysis for cantilever plate structure excited by patches of piezoelectric actuator is presented. To investigate the influence of actuator location and configuration of piezoelectric actuators attached to the plate structure in order to identify the optimal configuration of the actuators for selective excitation of the mode shapes of the cantilever plate structure. The finite element modeling based on ANSYS package using modal analysis and harmonic analysis is used in this study for cantilever plate structure excited by patch type of piezoelectric actuators of PZT-5A at different locations of same geometrical parameters on the cantilever beam. The results clearly indicate optimal locations and configuration of the piezoelectric actuator patches for achieving the excitation of plate modes. Consequently, the results indicate that effective active damping of structural vibration of the cantilever plate can be achieved by proper positioning of the piezoelectric actuator patches.

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