Available studies that compare experimental with analytical bending capacity of thin-walled circular tubes are few. A wide difference is noticed between experimental and analytical results especially for thin-walled tubes. Trying to fill this gap, experimental and analytical bending capacities of circular tubes are reviewed. A parametric study is conducted to predict the allowable bending stresses and slenderness ratios that separate between section types: compact, non-compact and slender. Four full-scale tubes are tested up to failure under bending: two cantilever beams with one concentrated load at the free end; and two simple beams with concentrated loads at the one-third points. Verification of the 3D non-linear finiteelement analysis against the experimental results is conducted to ensure analysis accuracy. In addition, comparison between the procedures used for bending capacity calculations in different codes and research studies is performed. Distribution of stresses and overall versus local buckling modes are investigated. Parameters studied include: Diameter to thickness (D/t) ratio, Length to Diameter (L/D) ratio, load conditions, support conditions and stressstrain curves.
يھدف ھذا البحث إلى تقييم سلوک المواسير الصلب رفيعة السمک تحت تأثير عزوم الانحناء. تم اختبار أربع ة قطاعات من المواسير الصلب المعرضة للعزوم وتحديد منحنى الحمل مع الإزاحة الرأسية ب ھدف الوقوف على السلوک الفعلى للکمرات واستخدام النتائج المعملية فى تأکيد النموذج ال تحليلي. اشتملت الدراسة ال تحليلية على نموذج للماسورة باستخدام برنامج العناصر المحددة (آنسيس) بھدف دراسة تأثير عدد من المتغيرات: نسبة قطر الماسورة للسمک - نسبة طول الماسورة للقطر - أسلوب التحميل – طريقة تمثيل الرکائز. وقد تم الوصول إلى معادلة مقترحة دقيقة لحساب الإجھاد الأقصى للمواسير المعرضة لحمل انحناء.
Abdel-Ghaffar, M., Gomaa, E., & Mourad, S. (2020). ANALYTICAL AND EXPERIMENTAL STUDY OF THIN CIRCULAR STEEL TUBES UNDER BENDING. Journal of Al-Azhar University Engineering Sector, 15(54), 13-32. doi: 10.21608/auej.2020.73141
MLA
Maheeb M. E. Abdel-Ghaffar; Eslam Y Gomaa; Sherif A Mourad. "ANALYTICAL AND EXPERIMENTAL STUDY OF THIN CIRCULAR STEEL TUBES UNDER BENDING", Journal of Al-Azhar University Engineering Sector, 15, 54, 2020, 13-32. doi: 10.21608/auej.2020.73141
HARVARD
Abdel-Ghaffar, M., Gomaa, E., Mourad, S. (2020). 'ANALYTICAL AND EXPERIMENTAL STUDY OF THIN CIRCULAR STEEL TUBES UNDER BENDING', Journal of Al-Azhar University Engineering Sector, 15(54), pp. 13-32. doi: 10.21608/auej.2020.73141
VANCOUVER
Abdel-Ghaffar, M., Gomaa, E., Mourad, S. ANALYTICAL AND EXPERIMENTAL STUDY OF THIN CIRCULAR STEEL TUBES UNDER BENDING. Journal of Al-Azhar University Engineering Sector, 2020; 15(54): 13-32. doi: 10.21608/auej.2020.73141
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