Numerical Analysis of Stress Intensity Factor of Surface Crack in X80 Steel Plate Strengthened with FRP Under Tensile Load

doi:10.3969/j.issn.1000-565X.2013.08.018

Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (8): 109-114.doi: 10.3969/j.issn.1000-565X.2013.08.018

• Mechanics • Previous Articles Next Articles

Numerical Analysis of Stress Intensity Factor of Surface Crack in X80 Steel Plate Strengthened with FRP Under Tensile Load

Zhao Chuan- yu¹Huang Pei- yan^1,2Luo Yi¹

1.School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China;2.State Key Laboratory of Subtropical Construction Science,South China University of Technology,Guangzhou 510640,Guangdong,China

Received:2013-03-01 Revised:2013-04-08 Online:2013-08-25 Published:2013-07-01
Contact: 黄培彦(1952-)，男，教授，博士生导师，主要从事疲劳与断裂、桥梁结构耐久性研究． E-mail:pyhuang@scut.edu.cn
About author:赵传宇(1984-)，男，博士生，主要从事疲劳与断裂、桥梁力学研究．E-mail:zhaochuanyu@126．com
Supported by:
国家自然科学基金重点资助项目(51078145， 11132004)

Abstract

Abstract:

Semi- elliptic surface crack is a common defect in metal structures,which is easy to propagate under the effects of external factors and may even result in the damage of the structures.The service life of the damaged struc-tures can be greatly extended by using the fiber- reinforced polymer (FRP) to strengthen and repair them.In this paper,the finite element software Abaqus is employed to numerically analyze the stress intensity factor (SIF) of the semi- elliptic surface crack in the X80 steel plate strengthened with FRP under tensile load,and the semi- empirical expression of the SIF is obtained.The results show that,under the uniform tensile load,the crack shape ratio has a greater effect on the SIF as well as on the reinforcement effect,and the relative crack depth also affects them to a certain degree.

Key words: surface crack, fiber reinforced polymer, stress intensity factor, steel plate, reinforcement

CLC Number:

Zhao Chuan- yu Huang Pei- yan Luo Yi . Numerical Analysis of Stress Intensity Factor of Surface Crack in X80 Steel Plate Strengthened with FRP Under Tensile Load[J]. Journal of South China University of Technology (Natural Science Edition), 2013, 41(8): 109-114.

[1]	WANG Fujian, CHENG Huiling, MA Dongfang, et al. Reconstruction of Urban Vehicle Path Chain Based on Deep Inverse Reinforcement Learning [J]. Journal of South China University of Technology(Natural Science Edition), 2023, 51(7): 120-128.
[2]	CHEN Feng, MAO Haobin, CAI Jiling, et al. Multidimensional cross-layer bandwidth prediction for low-latency real-time video [J]. Journal of South China University of Technology(Natural Science Edition), 2023, 51(11): 18-27.
[3]	XU Lunhui, YU Jiaxin, PEI Mingyang, et al. Repositioning Strategy for Ride-Hailing Vehicles Based on Geometric Road Network Structure and Reinforcement Learning [J]. Journal of South China University of Technology(Natural Science Edition), 2023, 51(10): 99-109.
[4]	WANG Gao, CHEN Xiaohong, LIU Ning, et al. A Robot Grasping Policy Based on Viewpoint Selection Experience Enhancement Algorithm [J]. Journal of South China University of Technology(Natural Science Edition), 2022, 50(9): 126-137.
[5]	LING Yuhong, WEN Xingui, ZHENG Wenli, 等. Experimental Study on Mechanical Behavior of New Type Side Joint of CFST Composite Column-Concrete Beam [J]. Journal of South China University of Technology (Natural Science Edition), 2022, 50(1): 38-49.
[6]	FENG Han, ZHANG Xuemin, OU Xuefeng, et al. Experimental Study on Geopolymer Grouting Material in Rapid Grouting Reinforcement of Fractured Rock [J]. Journal of South China University of Technology (Natural Science Edition), 2020, 48(9): 43-50.
[7]	LI Baijian, ZHU Liangsheng, LI Yong, et al. Experimental Investigation on Concrete Pipe Culvert Ｒeinforced by Small Corrugated Steel Pipes [J]. Journal of South China University of Technology (Natural Science Edition), 2020, 48(2): 58-68.
[8]	LI Baijian ZHU Liangsheng FU Xinsha LI Yong . Mechanical Properties of Two Kinds of Lined Reinforced Concrete Pipe Culvert [J]. Journal of South China University of Technology (Natural Science Edition), 2019, 47(6): 101-107.
[9]	YAN Junwei HUANG Qi ZHOU Xuan . Energy-saving Optimization Operation of Central Air-conditioning System Based on Double-DQN Algorithm [J]. Journal of South China University of Technology (Natural Science Edition), 2019, 47(1): 135-144.
[10]	LI Baijian FU Xinsha ZHU Liangsheng. Research on Mechanical Properties of Corrugated Steel Plate with Relieving Slab Based on Equivalent Stiffness#br# [J]. Journal of South China University of Technology(Natural Science Edition), 2018, 46(9): 131-139.
[11]	GAO Lei ZHANG Feng LIU Jiaqi LIU Guanzhi LU Xiaorui. Characterization of Interfacial Bonding for HB-FRP Strengthened Concrete Beams#br# [J]. Journal of South China University of Technology(Natural Science Edition), 2018, 46(9): 51-59.
[12]	LI Baijian ZHU Liangsheng FU Xinsha . Numerical Analysis of Corrugated Steel Plate - Composite Beam Structure Based On Equivalent Stiffness Method [J]. Journal of South China University of Technology (Natural Science Edition), 2018, 46(12): 111-120.
[13]	PENG Jian-xin WANG Dan. Effect of Sound Reinforcement System on Chinese Speech Intelligibility in Primary School Classrooms [J]. Journal of South China University of Technology (Natural Science Edition), 2017, 45(6): 25-30.
[14]	. Study on reinforcement optimization of starting stratum of EPB Shield [J]. Journal of South China University of Technology (Natural Science Edition), 2017, 45(5): 105-112.
[15]	ZHANG Li-juan XU Zhong-zheng ZHONG Qing-wen. Reinforcement Design of BFRP-Reinforced Continuously-Reinforced Concrete Pavement [J]. Journal of South China University of Technology (Natural Science Edition), 2017, 45(4): 74-80.

Numerical Analysis of Stress Intensity Factor of Surface Crack in X80 Steel Plate Strengthened with FRP Under Tensile Load

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments