PSI - Issue 39

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2020) 000–000 il l li t . i i t. tr t r l I t rit r i ( )

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ScienceDirect

Procedia Structural Integrity 39 (2022) 214–221

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors Abstract This study investigates the displacement and angular misalignment of steel load-carrying cruciform welded joints and its effect on fatigue curves. The misalignment states of the welded joints were statistic and examined by optical equipment. The high cycle fatigue experiments on the misalignment load-carrying cruciform welded joints were carried out to obtain the S-N curves, which was compared to the IIW nominal reference curves. Finite element analysis was conducted to obtain the related fatigue indicators considering the effect of the displacement and angular misalignment on the basis of the SED method, hot spot method, and effective notch stress method. The related analytical solutions for the misalignment cases were proposed to for the fatigue strength estimations. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors Keywords: Fatigue failure assessment; Misalignment effect ； Cruciform welded joints 1. Introduction Weld joints are widely used in the assembly of shipbuilding and ocean engineering structures . It is common that these structures are subject to cyclic loading conditions in service, which cause the interaction of alternating stress for the weld joints or components. Due to the complexity of nonstandard manufacturing process, constraint states and i t i ti t t i l t l i li t t l l i i l j i t it t ti . i li t t t t l j i t t ti ti i ti l i t. i l ti i t t i li t l i i l j i t i t t t i t , i t t i l . i it l t l i t t t i t l t ti i i t i i t t t i l t l i li t t i t t , t t t , ti t t t . l t l ti l l ti t i li t t t ti t t ti ti . © 2021 The Authors. Publi . . This is an open access article under th li tt :// ti . /li / / . i i ilit t it : ti f il r t; i li t ff t r if r l j i t . i l j i t i l i t l i il i i i t t t i t t t t t j t t li l i iti i i , i t i t ti lt ti t t l j i t t . t t l it t t i , t i t t t 7th International Conference on Crack Paths Misalignment effect on the fatigue failure behaviour of steel cruciform welded joints Wei Song a, * , Zheng Man b , Jie Xu b , Shoupan Wei c , Muchun Cui c , Filippo Berto d a School of Mechanical & Electrical Engineering, Xuzhou University of Technology, Xuzhou 221018, PR China ; b School of Materials Science and Engineering, China University of Mining and Technology (CUMT), 221116 Xuzhou, PR China; c Xuzhou XCMG Mining Machinery Company, Xuzhou, 221000, China c Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway. cruciform weld e a, b b c c o Berto d a l f i l l t i l i i , i it f l , , i b l f t i l i i i , i i it f i i l ( ), , i ; c i i i , , , i c t t f i l I t i l i i , i i it f i l ( ), i , . Abstract

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2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo i i rti l r t - - li ( tt :// r ti . r /li / - - / . ) r-r i r r i ilit f t r tr t r l I t rit i t ( I )

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of CP 2021 – Guest Editors 10.1016/j.prostr.2022.03.090