Free vibration studies of multiphase and layered magneto-electro-elastic beam for BaTiO3-CoFe2O4 composite is carried out. In-plane plate finite-element analysis is used to obtain the behaviour of magneto-electro-elastic beam. Studies are carried out for beams for different boundary conditions, as may be applicable in design of smart sensors/actuators. The ANSYS package is used to validate the results obtained by the computer code developed for piezoelectric (PE) beam. Plane stress condition is used for the Euler-Bernouli magneto-electro-elastic beam. © 2006 Elsevier Ltd. All rights reserved.

Natrajan Ganesan

Seetharaman Swarnamani

Actuators

Barium titanate

Boundary conditions

finite element method

Sensors

Vibrations (mechanical)

COMPUTER CODE

Free Vibrations

MAGNETO-ELECTRO-ELASTIC BEAM

SMART SENSORS

Elastic waves

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Journal of Sound and Vibration

Magneto-electro-elastic (MEE) materials show a significant coupling between the mechanical, electrical, and magnetic fields. A three-phase MEE composite consisting of piezoelectric and piezomagnetic phases separated by a polymer matrix would have greater ductility and formability. In this article, harmonic response of three-phase MEE beam under mechanical, electrical, and magnetic load is presented using finite element method. Numerical studies are presented for different volume fraction (vf) of the magnetic phase in the three-phase MEE composite. Studies are done for clamped-free boundary condition of the beam. Ansys 8.1 is used to validate the code developed. The influence of various coupling term is also studied. The effect of coupling terms influencing the load vector plays a major role in the generation electric and magnetic potential when subjected to magnetic and electric conditions. © 2009 SAGE Publications.

Journal of Intelligent Material Systems and Structures

Harmonic response of three-phase magneto-electro-elastic beam under mechanical, electrical and magnetic environment

In this paper transient response of multiphase magneto-electro-elastic cantilever beam is presented using finite element method. Numerical studies are presented for different volume fraction of the piezoelectric phase (BaTio 3) in magneto-electro-elastic (CoFe2 O4- BaTiO3) composite under clamped-free boundary condition. Newmark Beta method is employed to find the transient response of the beam. A comparison between the elastic, coupled, and uncoupled response of 0.6 volume fraction magneto-electro-elastic beam is also presented. Ansys 8.1 has been used to validate the displacement (uZ) and electric potential (φ) for (PZT)-epoxy mixed component (PECP) material with computer code.

International Journal of Computational Methods in Engineering Science and Mechanics

Transient dynamic response of cantilever magneto-electro-elastic beam using finite elements

In this paper, the sensory behaviour of magneto-electro-elastic (MEE) materials is presented under transient mechanical loading using a finite element method. The sensor is bonded on the top surface of a mild steel beam. Numerical results are presented for different sensor locations along the length of a beam, subjected to clamped-free and simply supported boundary conditions. A transient sensory response of PZT-5 and (Terfenol-D)-epoxy mixed components (MSCP) is also studied. Ansys 8.1 is used to validate the sensory response (i.e. displacement and electric potential) of PZT-5 with the computer code. © 2008 Elsevier B.V. All rights reserved.

Sensors and Actuators, A: Physical

Behaviour of magneto-electro-elastic sensors under transient mechanical loading

The free vibrations of simply supported magneto-electro-elastic cylindrical shells are studied. A series solution is assumed in the circumferential and axial directions of the shell to preserve the three-dimensional character of the structure. The constitutive equations of the magneto-electro-elastic medium involving mechanical, electrical and magnetic fields are used to derive the finite element model for the system. The influence of the piezomagnetic effect on the structural frequencies of the cylindrical shell is studied. A comparison is made between a shell with a layered configuration and one with a multiphase system. The study is carried out for a typical shell with simply supported boundary conditions for different ratios of length to radius and radius to thickness to analyse the frequency behaviour. © 2006 IOP Publishing Ltd.

Smart Materials and Structures

Free vibrations of simply supported layered and multiphase magneto-electro-elastic cylindrical shells

Studies on magneto-electro-elastic cylindrical shell have been carried out in the present work. The constitutive equations of piezomagnetic medium involving mechanical, electrical and magnetic fields are used to derive finite element model for the system. The semi-analytical finite element model is developed. The influence of piezomagnetic effect on the structural frequencies is evaluated. The comparative study of shell with layered configuration with that of multiphase system is attempted. The study is carried out for a typical shell with clamped-clamped boundary conditions. © 2005 Elsevier Ltd. All rights reserved.

Free vibrations of clamped-clamped magneto-electro-elastic cylindrical shells

Free vibration response of two-dimensional magneto-electro-elastic laminated plates

Composites Part B: Engineering

Static analysis of functionally graded elastic anisotropic plates using a discrete layer approach

On the Constitutive Equations of Magnetoelectroelastic Solids

Free vibration behaviour of multiphase and layered magneto-electro-elastic beam

Journal	Journal of Sound and Vibration
Publisher	Academic Press
ISSN	0022460X
Open Access	No