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In this paper, the crack-tip field intensity factors of a piezoelectric crack are respectively evaluated by an interaction integral (M-integral) and a modified crack closure integral method (MCCI). By applying the dual BEM to piezoelectric crack models, the crack-tip fracture parameters using M-integral and MCCI are verified by the existing analytical solutions and compared with the results by the...
This paper investigates the shear horizontal wave (SH wave) propagation along the periodic grating surface with grooves in a magneto-electro-elastic (MEE) substrate. The theoretical derivation is given for an arbitrary surface profile. Based on the Bloch-Floquet theorem and by using the Taylor-Mclaurin's series as well as the orthogonality condition of the wave modes, the mechanical, electric and...
A numerical method based on the Generalized Multipole Technique (GMT) is proposed to calculate the band gaps of scalar waves in two-dimensional phononic crystal, which is composed of arbitrary shape cylinders embedded in a host medium in square lattice. In order to find the eigenvalues of the problem, besides the sources used to expand the wave field, an extra monopole source is introduced which acts...
The transmission properties of elastic and acoustic waves propagating in a two-dimensional mixed solid-fluid phononic crystal are studied by using the boundary element method (BEM). The phononic system is composed of a series of periodically spaced infinite solids embedded in a fluid matrix, in which the solid has finite periodic layers in one direction and are periodically spaced in another direction...
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