Paper Titles
Modeling Crack Initiation and Propagation in Nickel Base Superalloys
p.53
How Does Bone Detect Cracks?
p.57
Micro-Damage Mechanisms and Property Fluctuation of Recycled Aggregate Concrete
p.61
An Evaluation of Fatigue Crack Growth in a Reactor Steel in Air and Water Environments Considering Closure Effects
p.65
Fracture Analysis of Magnetoelectroelastic Composite Materials
p.69
Interface Crack in Anisotropic Solids under Impact Loading
p.73
A Probabilistic Extended Finite Element Approach: Application to the Prediction of Bone Crack Propagation
p.77
Mechanical Behavior of High-Tension Bolted Joints with Varying Bolt Size and Plate Thickness
p.81
Finite Element Analysis of the Cohesive Zone across a Strength Mismatched Bimetallic Interface
p.85

Fracture Analysis of Magnetoelectroelastic Composite Materials

Article Preview

Abstract:

This paper presents a crack analysis of linear magnetoelectroelastic materials subjected to static loading conditions. To this end, an efficient boundary element method (BEM) is developed. Unlike many previous investigations published in literature, two-dimensional (2-D) linear magnetoelectroelastic materials possessing fully coupled piezoelectric, piezomagnetic and magnetoelectric effects are considered in this paper. A combination of the displacement BEM and the traction BEM is used in the present formulation. The displacement BEM is applied for the external boundary of the cracked solid, while the traction BEM is used for the crack-faces. A regularization technique is implemented to compute the strongly singular and hypersingular boundary integrals in the BEM. The electric displacement intensity factor (EDIF), the magnetic induction intensity factor (MIIF), the stress intensity factors (SIF), the mechanical strain energy release rate (MSERR) and the total energy release rate (TERR) are evaluated directly from the computed nodal values at discontinuous quarter point elements placed next to the crack tip. The accuracy of the BEM is verified by analytical solutions known in literature. Results are presented for a branched crack in a bending specimen subjected to combined magnetic-electric-mechanical loading conditions.

You might also be interested in these eBooks
Advances in Fracture and Damage Mechanics VI View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 348-349)

Pages:

69-72

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.348-349.69

Citation:

Cite this paper

Online since:

September 2007

Authors:

R. Rojas-Díaz, Felipe García-Sánchez, Andrés Sáez, Chuan Zeng Zhang

Keywords:

BEM, Electric Displacement, Magnetic Induction, Magnetoelectroelastic Materials

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] C.W. Nan, Magnetoelectric effect in composite of piezoelectric and piezomagnetic phases, Phys. Rev. B 50 (1994) 6082-6088.

DOI: 10.1103/physrevb.50.6082

Google Scholar

[2] B.L. Wang and Y.W. Mai, Crack tip field in piezoelectric/piezomagnetic media, Eur. J. Mech. A/Solids 22 (2003) 591-602.

DOI: 10.1016/s0997-7538(03)00062-7

Google Scholar

[3] C.F. Gao, H. Kessler and H. Balke, Crack problems in magnetoelectroelastic solids. Part I: exact solution of a crack, Int. J. Engrg. Sci., 41 (2003) 969-981.

DOI: 10.1016/s0020-7225(02)00323-3

Google Scholar

[4] F. García-Sánchez, A. Sáez and J. Domínguez, Anisotropic and piezoelectric materials fracture analysis by BEM, Computers and Structures 83 (2005) 804-820.

DOI: 10.1016/j.compstruc.2004.09.010

Google Scholar

[5] X. Jiang and E. Pan, Exact solution for 2D polygonal inclusion problem in anisotropic magnetoelectroelastic full-, half-, and bimaterial-planes, International Journal of Solids and Structures 41 (2004) 4361-4382.

DOI: 10.1016/j.ijsolstr.2004.03.017

Google Scholar

[6] Z.F. Song and G.C. Sih, Crack initiation behavior in magnetoelectroelastic composite under inplane deformation, J. Theoret. Appl. Fract. Mech. 39 (2003), 189-207.

DOI: 10.1016/s0167-8442(03)00002-8

Google Scholar