کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
770564 1463107 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simulation of time-dependent crack growth in brittle rocks under constant loading conditions
ترجمه فارسی عنوان
شبیه سازی رشد کرکی وابسته به زمان در سنگ های شکننده در شرایط بارگذاری ثابت
کلمات کلیدی
طول عمر، رشد شکاف زیرکریتی، معادله چارلز، کرک بال، شبیه سازی عددی، مکانیک راک
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• A lifetime prediction scheme was developed for rock under constant loadings.
• Numerical simulations were performed utilizing the developed modeling scheme.
• The damage process and macroscopic fracture pattern of the models were studied.
• Typical fracture patterns were observed in the numerical models.
• Preliminary studies were performed through numerical modeling.

Based on the theory of subcritical crack growth, linear elastic fracture mechanics (LEFM), and Charles equation, a lifetime prediction scheme has been developed for rock specimens containing initial microcracks under constant loadings. Numerical simulations were performed utilizing the developed modeling scheme. Lifetimes were obtained through numerical calculation; the damage process and macroscopic fracture pattern of the models were studied. Typical fracture pattern, like tensile cracks and shear bands, were observed. A few preliminary studies were also performed to compare the results with in situ observations. Conclusions were drawn and possible improvements to future research work are proposed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 119, March 2014, Pages 53–65
نویسندگان
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