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A PHD position available in University of North Texas

A Three-year PHD position is available immediately in the Department of Mechanical and Energy Engineering, University of North Texas-Denton in the fields of piezoelectric gas sensor.

Candidates should have a Bachelor/Master's degree in mechanical engineering, Solid Mechanics,  Electrical engineering or Chemical engineering with good academic standing and should have at least one of the experience in the following:

(1) Piezoelectric sensor device modelling and experiment

(2) MEMS device fabrication

(3) Gas sensor development

Payam Soltani's picture

Tuning of a piezoelectric vibration absorber attached to a damped structure

Tuning of a piezoelectric vibration absorber attached to a damped structure

By : Payam Soltani, Gaetan Kerschen, Gilles Tondreau, Arnaud Deraemaeker

Abstract:

(ABAQUS CAE) piezoelectric analysis

Hello. 

I'm doing piezoelectric analysis using abaqus CAE v6.12.

Specifically, what I'm doing now is to make the bimorph piezoelectric harvester model using Abaqus CAE

and to validate my model.

My FE model is made based on the model developed by A Erturk and D J Inman in their paper,

'An experimentally validated bimorph cantilever model for piezoelectric energy harvesting from base excitations'

They presented the analytical solution for voltage output and experimental validation is also presented in this paper.

Payam Soltani's picture

The Nonlinear Piezoelectric Tuned Vibration Absorber

The nonlinear piezoelectric tuned vibration absorber

By: Payam SOLTANI and Gaetan KERSCHEN

Abstract:

Piezoelectricity above the Curie temperature? Combining flexoelectricity and functional grading to enable high-temperature elect

Most technologically relevant ferroelectrics typically lose piezoelectricity above the Curie temperature. This limits their use to relatively low temperatures. In this Letter, exploiting a combination of flexoelectricity and simple functional grading, we propose a strategy for high-temperature electromechanical coupling in a standard thin film configuration.

Phononic crystal with adaptive connectivity: A new approach to 'smart' materials

In recent times, mechanical metamaterials and a phononic crystals have attracted the attention of some groups, as they allow to exploit on a larger scale phenomena known from solid state physics, such as the creation of band gaps at certain frequencies. The peculiarity of metamaterials is that their effective properties emerge from the periodic geometric organization of their unit cells rather than from the constituting bulk materials. Furthermore, metamaterials can be built in any size, ranging from the nanometer to the meter scale, and out of any material to suit different needs.

Laminated composite smart stiffined plate

I am working on topic ' Finite Element Analysis of laminated composite smart stiffened plate'. I am not getting proper proper mathematical formulation for using in coding for MATLAB program.

ERROR in ABAQUS

Hi colleague

 does anybody know, what is this strange error :   Error in connection to analysis

i am trying to model fracture mechanics on piezoelecteric material, when i select the piezoelectric as a familiy in mesh part, then when runing the model, i recieve this error. if anybody knows how to fix it please help me.thanks 

Xiao Hu Liu's picture

The piezoelectronic transistor: A nanoactuator-based post-CMOS digital switch with high speed and low power

A review article of our research at IBM TJ Wason Research Center in piezoelectronic transistor, an exploratory device beyond silicon, is published in MRS Bulletin, Volume 37, Issue 11, November 2012, pp 1071-1076. Your future computer may depend even more on the mechanics.

http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid...

Abstract

KennyNg's picture

Transverse moduli for composite

I'm currently working on modeling 3 phases composites material. However, I'm having hard time on finding the transverse modulus as it's different from analytical results. I've been using Mori-Tanaka approach to determine the stiffness moduli. Does anyone know how to obtain a correct values for the transverse moduli? 

Ji Wang's picture

Faculty Positions at Piezoelectric Device Laboratory, Ningbo University

The Piezoelectric Device Laboratory has immediate opennings for recent PhDs.  We are engaged in researchs in piezoeelctric acoustic wave resonators with supports from government and indsutry.  The Laboratory has been grwoing and we would like to have new members to accelerate the pace and expand collaborations with the fast growing piezoelectric acoustic wave device industry in China and other countries.

Ji Wang's picture

2010 Symposium on Piezoelectricity,Acoustic Waves, and Device Applications

CSTAM ASC  IEEE
2010 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications

December 10-13, 2010, Xiamen, Fujian,
China

Websitehttp://piezo.xmu.edu.cn/spawda10

 

Multiphysics Capabilities of ADINA

ADINA offers a comprehensive array of multiphysics capabilities tightly integrated in one program:

* Fluid-structure interaction (FSI)
* Thermo-mechanical coupling (TMC)
* Structural-pore pressure coupling (porous media)
* Thermal-fluid-structural coupling
* Electric field-structural coupling (piezoelectric)
* Thermal-electrical coupling (Joule heating)
* Acoustic fluid-structural coupling
* Fluid flow-mass transfer coupling

About piezoelectric resonance.

Choose a channel featured in the header of iMechanica: 

For 31 mode piezoelectric plate. I have measured it's electric impedance spectrum (curve of Log IZI~ Frequency). I found that, when I used this plate for a piezoelectric sensor to receive mechanic signals. the maximum output  occured at antiresonance frequency;   For example, for piezoelectric hydrophone or receiving-type piezoelectric transducers, It works at antiresonance frequency (at the maximum electric impedance). 

Ji Wang's picture

Second Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (Spawda 2006)

Advances in the research of the theory of Piezoelectricity and Acoustic Waves have provided essential foundation and new opportunities to device technology and have been fostering academic exchanges and interaction in the piezoelectric device industry.With the increased research activities in piezoelectricity and acoustic waves and recent fast growth in piezoelectric devices, we are also facing many technological challenges from real engineering applications and product design and manufacturing.Following the successful SPAWDA 2004 in Ningbo, Chinese Society of Theoretical and Applied Mechanics, IEEE UFFC and the Acoustical Society of China have decided, also with industrial support, to hold the SPAWDA 2006 at Zhejiang University, Hangzhou, Zhejiang, China from December 14-17.The conference topics include, but not limited to,

Ji Wang's picture

Symposium on the Mechanics of Electromagnetic Materials and Structures, ICNM-V, June 11-14, 2007, Shanghai

You are cordially invited to participate in the Symposium on the Mechanics of Electromagnetic Materials and Structures, the 5th International Conference on Nonlinear Mechanics (ICNM-V), to be held in Shanghai, China, June 11-14, 2007.  You may find more information at the website of the conference.

The symposium topics include piezoelectricity, ferroelectricity, magnetoelasticity, electromagnetic fluids and various applications in engineering and technology, but are not limited to the above. Experimental, theoretical, and computational studies are all welcome.

Please e-mail your one-page abstract(s) to any of us listed below. We look forward to hearing from you. If you have any questions, please do not hesitate to contact us at

Professor Ji Wang, Ningbo University, wangji@nbu.edu.cn

Professor Yuantai Hu, Central South University, hudeng@263.net

Professor Jiashi Yang, University of Nebraska, jyang1@unl.edu

Professor Daining Fang, Tsinghua University, fangdn@tsinghua.edu.cn

Submission of abstract: as soon as possible.

Notification of acceptance: Nov. 1, 2006

Submission of final paper(s) for the conference proceedings: Jan. 1, 2007

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