کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
773687 1463215 2012 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transient dynamic crack analysis in linear magnetoelectroelastic solids by a hypersingular time-domain BEM
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Transient dynamic crack analysis in linear magnetoelectroelastic solids by a hypersingular time-domain BEM
چکیده انگلیسی

This paper presents a hypersingular time-domain boundary element method (TDBEM) for transient dynamic crack analysis in two-dimensional (2D), homogeneous, anisotropic and linear magnetoelectroelastic solids. Stationary cracks in infinite and finite solids under impact loading are investigated. A combination of the strongly singular displacement boundary integral equations (BIEs) and the hypersingular traction boundary integral equations is used in the present analysis. The Galerkin-method is applied for spatial discretization, while a collocation method is implemented for the temporal discretization. The time-domain fundamental solutions for linear magnetoelectroelastic solids are derived. Both temporal and spatial integrations can be carried out analytically. The line integrals over the unit circle arising in the time-domain fundamental solutions are computed numerically by standard Gaussian quadrature. An explicit time-stepping scheme is obtained to compute the unknown boundary data including the generalized crack-opening-displacements (CODs) numerically. To ensure a direct and an accurate computation of the dynamic intensity factors (IFs) from the generalized CODs, special crack-tip elements are implemented. Several numerical examples are shown to confirm the accuracy and the efficiency of the present hypersingular time-domain BEM.


► Transient dynamic crack analysis in linear magnetoelectroelastic solids is presented.
► For this purpose, a time-domain boundary element method (TDBEM) is developed.
► Dynamic fundamental solutions for linear magnetoelectroelastic materials are derived.
► An explicit time-stepping scheme is obtained to compute the discrete boundary data.
► Numerical examples show the effects of the coupled fields and the different loadings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Mechanics - A/Solids - Volume 32, March–April 2012, Pages 118–130
نویسندگان
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