کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5020331 1468678 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A coupled thermo-mechanical model based on the combined finite-discrete element method for simulating thermal cracking of rock
ترجمه فارسی عنوان
یک مدل ترمو مکانیکی همراه با روش ترکیب عددی محدود برای تشخیص ترک خوردگی حرارتی سنگ
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Based on a combined finite-discrete element method (FDEM), this study builds a coupled thermo-mechanical model (termed FDEM-TM) to simulate thermal cracking of rock. The coupled thermo-mechanical model consists of two major parts. In the first part the temperature distribution of the system is analyzed based on the heat conduction equation. In the second part the thermal stress caused by temperature change is added to perform mechanical fracture calculation. Based on these two parts, we can model rock fracture driven by thermo-mechanical coupling. Three examples with analytic solutions are used to verify the correctness of the model in dealing with the problems of steady-state heat conduction, unsteady-state conduction, and thermal-mechanic coupling, respectively. In addition, an example of thermal cracking is also given and compared with the experimental results. The simulation results are in excellent agreement with the analytical solutions or experimental results, verifying the correctness of the coupled thermo-mechanical model to simulate thermal cracking. The proposed method provides a new tool for thermal-mechanical coupling problems in geothermal exploitation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Rock Mechanics and Mining Sciences - Volume 91, January 2017, Pages 170-178
نویسندگان
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