کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4922423 1430179 2017 33 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adaptive multiscale homogenization of the lattice discrete particle model for the analysis of damage and fracture in concrete
ترجمه فارسی عنوان
همگن سازی چند متغیره سازگار از مدل ذرات گسسته شبکه برای تجزیه و تحلیل خسارت و شکست در بتن
کلمات کلیدی
همگن سازی چندگانه سازگار، معیارهای سازگار، آسیب بتن و شکستگی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This paper presents a new adaptive multiscale homogenization scheme for the simulation of damage and fracture in concrete structures. A two-scale homogenization method, coupling meso-scale discrete particle models to macro-scale finite element models, is formulated into an adaptive framework. A continuum multiaxial failure criterion for concrete is calibrated on the basis of fine-scale simulations, and it serves as the adaptive criterion in the multiscale framework. Thus, in this approach, simulations start without assigning any material Representative Volume Element (RVE) to the macro-scale finite elements. The finite elements that meet the adaptive criterion and must be entered into the multiscale homogenization framework are detected on the fly. This leads to a substantial reduction of the computational cost especially for loading conditions leading to damage localization in which only a small portion of the FE mesh is enriched with the homogenized RVE. Several numerical simulations are carried out to investigate the capability of the developed adaptive homogenization method. In addition, a detailed study on the computational cost is performed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 125, 15 October 2017, Pages 50-67
نویسندگان
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