کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8915414 1641099 2018 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crack propagation from a filled flaw in rocks considering the infill influences
ترجمه فارسی عنوان
انتشار کراک از یک نقص کامل در سنگها با توجه به تأثیرات انفجاری
کلمات کلیدی
انتشار کراک، نقص پر شده، قدرت نفوذ، ارزش انتقادی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی
This study presents a numerical and experimental study of the cracking behaviour of rock specimen containing a single filled flaw under compression. The primary aim is to investigate the influences of infill on crack patterns, load-displacement response and specimen strength. The numerical code RFPA2D (Rock Failure Process Analysis) featured by the capability of modeling heterogeneous materials is employed to develop the numerical model, which is further calibrated by physical tests. The results indicate that there exists a critical infill strength which controls crack patterns for a given flaw inclination angle. For case of infill strength lower than the critical value, the secondary or anti-cracks are disappeared by increasing the infill strength. If the infill strength is greater than the critical value, the filled flaw has little influence on the cracking path and the specimen fails by an inclined crack, as if there is no flaw. The load-displacement responses show specimen stiffness increases by increasing infill strength until the infill strength reaches its critical value. The specimen strength increases by increasing the infill strength and almost keeps constant as the infill strength exceeds its critical value.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Applied Geophysics - Volume 152, May 2018, Pages 137-149
نویسندگان
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