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A platform for research: civil engineering, architecture and urbanism
A ductile tearing assessment diagram for cracked circular-hollow-section joints under reversed loadings
https://orcid.org/0000-0002-6183-256X
Abstract This paper proposes a ductile tearing assessment diagram (TAD) to predict the load resistance to the crack extension relationship during the stable tearing process of the circular-hollow-section (CHS) joints under the reversed in-plane bending actions. The tearing assessment diagram utilizes the envelope of the load-deformation curve from the fracture test under reversed loadings to build the connection among the fracture resistance, load resistance and crack extension. To verify the proposed approach, this study performs fracture experiments, imposing the reversed in-plane bending on the CHS X-joints, made of Q345 steel, with a surface crack near the weld toe. The experimental investigation reveals the effect of the reversed loading on the fracture resistance and validates the TAD-based assessment for tubular joints. Meanwhile, this study performs the cyclic fracture test on the single-edge-notched-tension [SE(T)] specimen made of Q345 steel and derives the TAD from the experimental record of the SE(T) specimen. The specimen-based assessment successfully predicts the load versus crack extension relation for the reported joints under reversed loadings. The study provides a basic framework to predict the joint response under reversed loadings by integrating the material fracture characteristics.
Highlights This study presents a tearing assessment diagram for tubular joints under reversed loading. The assessment approach utilizes the material fracture resistance curve. The tearing assessment estimates the load versus crack extension for the joint. The comparison against experimental results validates the proposed approach.
A ductile tearing assessment diagram for cracked circular-hollow-section joints under reversed loadings
https://orcid.org/0000-0002-6183-256X
Abstract This paper proposes a ductile tearing assessment diagram (TAD) to predict the load resistance to the crack extension relationship during the stable tearing process of the circular-hollow-section (CHS) joints under the reversed in-plane bending actions. The tearing assessment diagram utilizes the envelope of the load-deformation curve from the fracture test under reversed loadings to build the connection among the fracture resistance, load resistance and crack extension. To verify the proposed approach, this study performs fracture experiments, imposing the reversed in-plane bending on the CHS X-joints, made of Q345 steel, with a surface crack near the weld toe. The experimental investigation reveals the effect of the reversed loading on the fracture resistance and validates the TAD-based assessment for tubular joints. Meanwhile, this study performs the cyclic fracture test on the single-edge-notched-tension [SE(T)] specimen made of Q345 steel and derives the TAD from the experimental record of the SE(T) specimen. The specimen-based assessment successfully predicts the load versus crack extension relation for the reported joints under reversed loadings. The study provides a basic framework to predict the joint response under reversed loadings by integrating the material fracture characteristics.
Highlights This study presents a tearing assessment diagram for tubular joints under reversed loading. The assessment approach utilizes the material fracture resistance curve. The tearing assessment estimates the load versus crack extension for the joint. The comparison against experimental results validates the proposed approach.
A ductile tearing assessment diagram for cracked circular-hollow-section joints under reversed loadings
https://orcid.org/0000-0002-6183-256X
Abstract This paper proposes a ductile tearing assessment diagram (TAD) to predict the load resistance to the crack extension relationship during the stable tearing process of the circular-hollow-section (CHS) joints under the reversed in-plane bending actions. The tearing assessment diagram utilizes the envelope of the load-deformation curve from the fracture test under reversed loadings to build the connection among the fracture resistance, load resistance and crack extension. To verify the proposed approach, this study performs fracture experiments, imposing the reversed in-plane bending on the CHS X-joints, made of Q345 steel, with a surface crack near the weld toe. The experimental investigation reveals the effect of the reversed loading on the fracture resistance and validates the TAD-based assessment for tubular joints. Meanwhile, this study performs the cyclic fracture test on the single-edge-notched-tension [SE(T)] specimen made of Q345 steel and derives the TAD from the experimental record of the SE(T) specimen. The specimen-based assessment successfully predicts the load versus crack extension relation for the reported joints under reversed loadings. The study provides a basic framework to predict the joint response under reversed loadings by integrating the material fracture characteristics.
Highlights This study presents a tearing assessment diagram for tubular joints under reversed loading. The assessment approach utilizes the material fracture resistance curve. The tearing assessment estimates the load versus crack extension for the joint. The comparison against experimental results validates the proposed approach.
A ductile tearing assessment diagram for cracked circular-hollow-section joints under reversed loadings
Liu, Tianyao (author) / Qian, Xudong (author) / Wang, Wei (author) / Chen, Yiyi (author)
Marine Structures ; 89
2023-02-04
Article (Journal)
Electronic Resource
English
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