کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7196021 1468305 2018 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase field modelling of crack propagation, branching and coalescence in rocks
ترجمه فارسی عنوان
مدل سازی فاز انتشار ترک، انشعاب و همبستگی در سنگ ها
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
We present a phase field model (PFM) for simulating complex crack patterns including crack propagation, branching and coalescence in rock. The phase field model is implemented in COMSOL and is based on the strain decomposition for the elastic energy, which drives the evolution of the phase field. Then, numerical simulations of notched semi-circular bend (NSCB) tests and Brazil splitting tests are performed. Subsequently, crack propagation and coalescence in rock plates with multiple echelon flaws and twenty parallel flaws are studied. Finally, complex crack patterns are presented for a plate subjected to increasing internal pressure, the (3D) Pertersson beam and a 3D NSCB test. All results are in good agreement with previous experimental and numerical results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 96, August 2018, Pages 174-192
نویسندگان
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