Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/90146
Title: Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending
Authors: Li, Tao
Lie, Seng-Tjhen
Shao, Yong-Bo
Keywords: Cracked CHS T/Y-joints
In-plane Bending
DRNTU::Engineering::Civil engineering
Issue Date: 2017
Source: Li, T., Lie, S.-T., & Shao, Y.-B. (2018). Plastic collapse load prediction of cracked circular hollow section T/Y-joints under in-plane and out-of-plane bending. Ocean Engineering, 148, 136-148. doi:10.1016/j.oceaneng.2017.11.033
Series/Report no.: Ocean Engineering
Abstract: The plastic collapse loads of cracked circular hollow section (CHS) T/Y-joints under in-plane and out-of-plane bending are investigated using finite element (FE) analyses. An in-house 3D FE mesh generator is specifically developed to create the mesh models of the cracked joints containing a semi-elliptical surface crack located at the weld toe of the chord. Mesh convergence tests are then carried out to check the accuracy of the generated mesh models. The in-plane and out-of-plane plastic collapse moments of uncracked CHS T/Y-joints are calculated and compared with results obtained from three codes and experimental data. The comparison shows that the plastic collapse moments of uncracked CHS T/Y-joints obtained in this study are accurate and reliable. Subsequently, an extensive parametric study is carried out to investigate the plastic collapse moments of cracked CHS T/Y-joints under in-plane and out-of-plane bending. It is found that the in-plane and out-of-plane plastic collapse moments may decrease by up to 35.1% and 33.6% respectively when the crack area Anc reaches 25% of the intersectional area, t0*lw. Finally, two lower bound strength reduction factor FAR equations for cracked CHS T/Y-joints under in-plane and out-of-plane bending are proposed.
URI: https://hdl.handle.net/10356/90146
http://hdl.handle.net/10220/48430
ISSN: 0029-8018
DOI: http://dx.doi.org/10.1016/j.oceaneng.2017.11.033
Rights: © 2017 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles

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