کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
512434 866407 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel linear triangular element of a three-dimensional displacement discontinuity method
ترجمه فارسی عنوان
یک عنصر خطی مثلثی خطی از روش انسجام سه بعدی جابجایی
کلمات کلیدی
عنصر مثلثی خطی، روش عنصر مرزی، روش انحلال انقطاع، شکستگی سه بعدی، شکستگی هیدرولیکی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی

Since only the boundary of the domain requires discretization, the boundary element method (BEM) is very efficient for the semi-infinite or infinite rock-related engineering problems, e.g., hydraulic fracturing in reservoir stimulation and rock cutting during excavation. A real fracture in the solid is usually of an arbitrary geometry in three dimensions, which usually requires a three-dimensional displacement discontinuity method (3D DDM) to determine the deformation and stress field in order to achieve reliable results. However, the use of 3D DDM with triangular elements is limited by the singularities of the integral either within or nearby the domain. In this paper, a novel linear triangular element with three nodes on its vertices is proposed. The analytical integral expressions of this linear triangular element are also theoretically derived. A solution procedure is also described which can be applied to determine the displacement and stress field around a three-dimensional fracture inside the infinite solid. The accuracy of these results are compared with the analytical solutions of the displacements and stresses induced by a pressurized penny-shaped. This procedure takes a shorter time and requires less elements than the usual constant DDM when achieving the same accuracy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Analysis with Boundary Elements - Volume 59, October 2015, Pages 89–96
نویسندگان
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