Finite Element Modeling Of Piezoelectric Actuators For Active Flow Control Applications
Download Finite Element Modeling Of Piezoelectric Actuators For Active Flow Control Applications full books in PDF, epub, and Kindle. Read online free Finite Element Modeling Of Piezoelectric Actuators For Active Flow Control Applications ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Lumped Element Modeling of Piezoelectric-driven Synthetic Jet Actuators for Active Flow Control
| Author | : Quentin Gallas |
| Publisher | : |
| Total Pages | : |
| Release | : 2002 |
| Genre | : |
| ISBN | : |
ABSTRACT: This thesis presents a lumped element model of a piezoelectric-driven synthetic-jet actuator. A synthetic jet, also known as a zero net mass-flux device, uses a vibrating diaphragm to generate an oscillatory flow through a small orifice or slot. In lumped element modeling, the individual components of a synthetic jet are modeled as elements of an equivalent electrical circuit using conjugate power variables. The frequency response function of the circuit is derived to obtain an expression for the volume flow rate through the orifice per applied voltage across the piezoceramic. The circuit is analyzed to provide physical insight into the dependence of the device behavior on geometry and material properties. Methods to estimate the model parameters are discussed along with pertinent model assumptions, and experimental verification is presented of the lumped parameter models. In addition, two prototypical synthetic jet actuators are built and tested. Very good agreement is obtained between the predicted and measured frequency response functions.
Placement of Piezoelectric Actuators for Active Control of Vibration Using Modal Parameters
| Author | : Xuegeng Zhu |
| Publisher | : |
| Total Pages | : 260 |
| Release | : 1998 |
| Genre | : Piezoelectric devices |
| ISBN | : |
Validation of High Displacement Piezoelectric Actuator Finite Element Models
| Author | : Barmac K. Taleghani |
| Publisher | : |
| Total Pages | : 24 |
| Release | : 2000 |
| Genre | : ANSYS (Computer system) |
| ISBN | : |
The paper presents the results obtained by using NASTRAN® and ANSYS® finite element codes to predict doming of the THUNDER piezoelectric actuators during the manufacturing process and subsequent straining due to an applied input voltage. To effectively use such devices in engineering applications, modeling and characterization are essential. Length, width, dome height, and thickness are important parameters for users of such devices. Therefore, finite element models were used to assess the effects of these parameters. NASTRAN® and ANSYS® used different methods for modeling piezoelectric effects. In NASTRAN®, a thermal analogy was used to represent voltage at nodes as equivalent temperatures, while ANSYS® processes the voltage directly using piezoelectric finite elements. The results of finite element models were validated by using the experimental results.
Validation of High Displacement Piezoelectric Actuator Finite Element Models
| Author | : National Aeronautics and Space Adm Nasa |
| Publisher | : Independently Published |
| Total Pages | : 30 |
| Release | : 2018-09-25 |
| Genre | : Science |
| ISBN | : 9781724026347 |
The paper presents the results obtained by using NASTRAN(Registered Trademark) and ANSYS(Regitered Trademark) finite element codes to predict doming of the THUNDER piezoelectric actuators during the manufacturing process and subsequent straining due to an applied input voltage. To effectively use such devices in engineering applications, modeling and characterization are essential. Length, width, dome height, and thickness are important parameters for users of such devices. Therefore, finite element models were used to assess the effects of these parameters. NASTRAN(Registered Trademark) and ANSYS(Registered Trademark) used different methods for modeling piezoelectric effects. In NASTRAN(Registered Trademark), a thermal analogy was used to represent voltage at nodes as equivalent temperatures, while ANSYS(Registered Trademark) processed the voltage directly using piezoelectric finite elements. The results of finite element models were validated by using the experimental results. Taleghani, B. K. Langley Research Center NASA/TM-2000-210309, NAS 1.15:210309, ARL-TR-2253, L-17999
Non-Linear Finite Element Modeling of Thunder Piezoelectric Actuators
| Author | : National Aeronautics and Space Adm Nasa |
| Publisher | : Independently Published |
| Total Pages | : 34 |
| Release | : 2018-09-25 |
| Genre | : Science |
| ISBN | : 9781724004758 |
A NASTRAN non-linear finite element model has been developed for predicting the dome heights of THUNDER (THin Layer UNimorph Ferroelectric DrivER) piezoelectric actuators. To analytically validate the finite element model, a comparison was made with a non-linear plate solution using Von Karmen's approximation. A 500 volt input was used to examine the actuator deformation. The NASTRAN finite element model was also compared with experimental results. Four groups of specimens were fabricated and tested. Four different input voltages, which included 120, 160, 200, and 240 Vp-p with a 0 volts offset, were used for this comparison. Taleghani, Barmac K. and Campbell, Joel F. Langley Research Center NASA/TM-1999-209322, L-17834, NAS 1.15:209322, ARL-TR-1977
Piezoelectric Actuators
| Author | : Hu Huang |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 186 |
| Release | : 2021-12-08 |
| Genre | : Science |
| ISBN | : 1839688319 |
Taking advantage of high resolution, rapid response, and compact structure, piezoelectric actuators are widely employed for achieving precision positioning in both scientific research and industrial application. With the development of science and technology, the requirements for precision positioning are increasing. Accordingly, great efforts have been made to improve the performances of piezoelectric actuators, and significant progress has been achieved. This book discusses some recent achievements and developments of piezoelectric actuators, in terms of piezoelectric material, driving principle, structural design, modeling, and control, as well as applications.
Non-linear Finite Element Modeling of THUNDER Piezoelectric Actuators
| Author | : Barmac K. Taleghani |
| Publisher | : |
| Total Pages | : 20 |
| Release | : 1999 |
| Genre | : Actuators |
| ISBN | : |
A NASTRAN non-linear finite element model has been developed for predicting the dome heights of THUNDER (THin Layer UNimorph Ferroelectric DrivER) piezoceramic actuators. To analytically validate the finite element model, a comparison was made with a non-linear plate solution using Von Karmen's approximation. A 500 volt input was used to examine the actuator deformation. The NASTRAN finite element model was also compared with experimental results. Four groups of specimens were fabricated and tested. Four different input voltages, which included 120, 160, 200, and 240 Vp-p with a 0 volts offset, were used for this comparison.
