ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper presents a crack analysis of linear magnetoelectroelastic materials subjected tostatic loading conditions. To this end, an efficient boundary element method (BEM) is developed.Unlike many previous investigations published in literature, two-dimensional (2-D) linearmagnetoelectroelastic materials possessing fully coupled piezoelectric, piezomagnetic andmagnetoelectric effects are considered in this paper. A combination of the displacement BEM andthe traction BEM is used in the present formulation. The displacement BEM is applied for theexternal boundary of the cracked solid, while the traction BEM is used for the crack-faces. Aregularization technique is implemented to compute the strongly singular and hypersingularboundary integrals in the BEM. The electric displacement intensity factor (EDIF), the magneticinduction intensity factor (MIIF), the stress intensity factors (SIF), the mechanical strain energyrelease rate (MSERR) and the total energy release rate (TERR) are evaluated directly from thecomputed nodal values at discontinuous quarter point elements placed next to the crack tip. Theaccuracy of the BEM is verified by analytical solutions known in literature. Results are presented fora branched crack in a bending specimen subjected to combined magnetic-electric-mechanicalloading conditions
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.69.pdf
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