کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
775686 898355 2010 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic analysis of interfacial crack problems in anisotropic bi-materials by a time-domain BEM
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Dynamic analysis of interfacial crack problems in anisotropic bi-materials by a time-domain BEM
چکیده انگلیسی

A time-domain boundary element method (BEM) together with the sub-domain technique is applied to study dynamic interfacial crack problems in two-dimensional (2D), piecewise homogeneous, anisotropic and linear elastic bi-materials. The bi-material system is divided into two homogeneous sub-domains along the interface and the traditional displacement boundary integral equations (BIEs) are applied on the boundary of each sub-domain. The present time-domain BEM uses a quadrature formula for the temporal discretization to approximate the convolution integrals and a collocation method for the spatial discretization. Quadratic quarter-point elements are implemented at the tips of the interface cracks. A displacement extrapolation technique is used to determine the complex dynamic stress intensity factors (SIFs). Numerical examples for computing the complex dynamic SIFs are presented and discussed to demonstrate the accuracy and the efficiency of the present time-domain BEM.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 76, Issue 13, September 2009, Pages 1996–2010
نویسندگان
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