کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
250732 502899 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Finite element study on the impact responses of concrete masonry unit walls strengthened with fiber-reinforced polymer composite materials
ترجمه فارسی عنوان
مطالعه عنصر محدود در پاسخ های ضربه به دیواره های بلوک بتن تقویت شده با مواد پلیمری تقویت پلیمر کامپوزیت
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

Research on the impact behaviour of concrete masonry unit (CMU) walls strengthened with fiber-reinforced polymer (FRP) composites is considerably limited. In this study, the effectiveness of externally bonded (EB) FRP technique on the resistance of CMU walls under high-velocity impact force was therefore investigated numerically. Finite element (FE) models were developed using LS-DYNA. The Concrete Damage Rel3 model and Enhanced Composite Damage material models were used for concrete and composite materials, respectively. Furthermore, the Add Erosion and Smooth Particle Hydrodynamics options were included to accurately represent impact behaviour. The FE models were validated using literature results. Applications of various EB FRP composites to CMU walls were investigated with the parameters of fiber types, fiber direction, fiber layer, and impactor velocity. The numerical results show that the EB FRP strengthening technique is significantly effective to improve the impact resistance of CMU walls by preventing an impactor from perforating the CMU walls.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 154, 15 October 2016, Pages 256–268
نویسندگان
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