نتایج جستجو برای Piezoelectric beam

تعداد نتایج: 67475  

2015
Yao Fenglin, Meng, Yin Hang, Shad Roundy,

AbstractWith the application of wireless sensor networks become widespread, supply energy for these wireless sensors proves to be a significant issue. Moreover, for the ambient vibration lies everywhere, the vibration can supply energy for the wireless sensor via energy harvester. The piezoelectric energy harvester becomes the research focus for the simple structure and higher energy conversion...

2003
Henry A. Sodano, Gyuhae Park, Donald J. Leo, Daniel J. Inman,

Piezoelectric materials can be used as mechanisms to transfer mechanical energy, usually ambient vibration into electrical energy that can be stored and used to power other devices. With the recent advances in wireless and MEMS technology, sensors can be placed almost anywhere necessary. Since these devices are wireless it becomes necessary that they have their own power supply. This power supp...

Journal: :CoRR 2007
J.-S. Chen, Shih-Hsin Chen, Kuo-Chang Wu,

This paper deals with the vibration analysis of an asymmetric composite beam composed of glass a piezoelectric material. The Bernoulli’s beam theory is adopted for mechanical deformations, and the electric potential field of the piezoelectric material is assumed such that the divergence-free requirement of the electrical displacements is satisfied. The accuracy of the analytic model is assessed...

Periodic piezoelectric beams have been used for broadband vibration energy harvesting in recent years. In this paper, a periodic folded piezoelectric beam (PFPB) is introduced. The PFPB has special features that distinguish it from other periodic piezoelectric beams. The Adomian decomposition method (ADM) is used to calculate the first two band gaps andtwelve natural frequencies of the PF...

1994
MARIUS TUCSNAK,

We consider an initial and boundary value problem modelling the vibrations of a Bernoulli-Euler beam with an attached piezoelectric actuator. We show that the Sobolev regularity of the solution is by 1 2 + higher than that one obtains by simply using the Sobolev regularity of the control term. The main results concern the dependence of the space of exactly controllable initial data on the locat...

2010
Michael I. Friswell,

Energy harvesting for the purpose of powering low power electronic sensor systems has received explosive attention in the last few years. A common device uses the piezoelectric effect for a cantilever beams at resonance to harvest ambient vibration energy. However most of these devices have a rectangular piezoelectric patch covering all or part of the beam. This paper considers the optimum desi...

1999
Brij N Agrawal, Kirk E Treanor,

This paper presents the analytical and experimental results on optimal placement of piezoceramic actuators for shape control of beam structures. The objective is to determine the optimum piezoceramic actuator locations and voltages to minimize the error between the desired shape and the achieved shape. The analytical model for predicting beam deformation due to a piezoelectric actuator is based...

2006
Qing-Sheng Yang, Qing-Hua Qin, Tong Liu,

This paper studies interfacial mechanical behavior of laminate beams, consisting of two piezoelectric facial sheets and an elastic core. The study is based on coupled multi-filed finite element formulation. The emphasis is placed on mechanical and electric behavior of interfaces between piezoelectric material and elastic material, including effect of geometrical parameters, stress distribution ...

2006
Emmanuelle Crépeau, Christophe Prieur, C. PRIEUR,

We consider a controllability problem for a beam, clamped at one boundary and free at the other boundary, with an attached piezoelectric actuator. By Hilbert Uniqueness Method (HUM) and new results on diophantine approximations, we prove that the space of exactly initial controllable data depends on the location of the actuator. We also illustrate these results with numerical simulations. Mathe...

2011
R. K. Sahoo,

ACKNOWLEDGEMENT It gives me immense pleasure to express my deep sense of gratitude to my supervisor Prof. Tarapada Roy and Prof. Haraprasad Roy for their invaluable guidance, motivation, constant inspiration and above all their ever cooperating attitude enabled me in bringing up this thesis in present elegant form.

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