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73141

ANALYTICAL AND EXPERIMENTAL STUDY OF THIN CIRCULAR STEEL TUBES UNDER BENDING

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Last updated: 03 Jan 2025

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Abstract

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.

DOI

10.21608/auej.2020.73141

Keywords

Thin-Walled, Circular Tubes, Nonlinear Analysis, Testing, Buckling المواسير الصلب ، التحليل اللاخطى ، اختبارات عملية ، التقوس ، الانحناء

Authors

First Name

Maheeb

Last Name

Abdel-Ghaffar

MiddleName

M. E.

Affiliation

Structural Engineering Department, Faculty of Engineering, Cairo University, Giza, Egypt

Email

cairosteel@yahoo.com

City

-

Orcid

-

First Name

Eslam

Last Name

Gomaa

MiddleName

Y

Affiliation

Structural Engineering Department, Faculty of Engineering, Cairo University, Giza, Egypt

Email

-

City

-

Orcid

-

First Name

Sherif

Last Name

Mourad

MiddleName

A

Affiliation

Structural Engineering Department, Faculty of Engineering, Cairo University, Giza, Egypt

Email

-

City

-

Orcid

-

Volume

15

Article Issue

54

Related Issue

11078

Issue Date

2020-01-01

Receive Date

2020-02-23

Publish Date

2020-01-01

Page Start

13

Page End

32

Print ISSN

1687-8418

Link

https://jaes.journals.ekb.eg/article_73141.html

Detail API

https://jaes.journals.ekb.eg/service?article_code=73141

Order

16

Type

Original Article

Type Code

706

Publication Type

Journal

Publication Title

Journal of Al-Azhar University Engineering Sector

Publication Link

https://jaes.journals.ekb.eg/

MainTitle

ANALYTICAL AND EXPERIMENTAL STUDY OF THIN CIRCULAR STEEL TUBES UNDER BENDING

Details

Type

Article

Created At

22 Jan 2023