PSI - Issue 47

ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online atwww.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com Available online atwww.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 47 (2023) 660–667

© 2023 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 IGF27 chairpersons Abstract In assessing ship Hull Girder Ultimate Strength (HGUS), the stiffened panel elements which contribute most to the total bending capacity of the ship are calculated under single loading (axial compression). However, certain parts of the ship's hull and bottom are subject to pressure loads caused by ambient seawater or cargo. The pressure load is predicted to decrease the ultimate strength of the stiffened panels under compressive loading. This paper considers combined loadings consisting of lateral-transverse pressure and axial compression to enhance the evaluation of the ultimate strength of stiffened panels. Initially, the stiffened panel elements of bulk carrier ships are selected considering their location, which implies the loads applied. Then the non-linear finite element analysis method was carried out using the ABAQUS. The analysis was divided into two load steps. At first, the lateral and transverse pressure is applied. Then, the displacement and the stress caused by the first step are brought to the second load step, which is the axial compression. The results show that the ultimate strength of panels under combined loading is lower than the single loading. © 2023 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 IGF27 chairpersons Keywords: ultimate strength; stiffened panel; bulk carrier; finite element analysis; IACS-CSR 1. Introduction Nowadays, transportation is very useful for human life. One of them is sea transportation which is widely used [Dabit et al., 2020; Nubli et al., 2022]. Due to its huge trading volume and the low cost of ship transportation, sea Yogie Muhammad Lutfi a , Ristiyanto Adiputra b, *, Aditya Rio Prabowo a, *, Nurul Muhayat a , Hermes Carvalho c , Tiago Fazeres-Ferradosa d a Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta, Indonesia b Research Center for Hydrodynamics Technology, National Research and Innovation Agency (BRIN), Surabaya, Indonesia c Department of Structural Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil d Department of Civil Engineering, University of Porto, Porto, Portugal Abstract In assessing ship Hull Girder Ultimate Strength (HGUS), the stiffened panel elements which contribute most to the total bending capacity of the ship are calculated under single loading (axial compression). However, certain parts of the ship's hull and bottom are subject to pressure loads caused by ambient seawater or cargo. The pressure load is predicted to decrease the ultimate strength of the stiffened panels under compressive loading. This paper considers combined loadings consisting of lateral-transverse pressure and axial compression to enhance the evaluation of the ultimate strength of stiffened panels. Initially, the stiffened panel elements of bulk carrier ships are selected considering their location, which implies the loads applied. Then the non-linear finite element analysis method was carried out using the ABAQUS. The analysis was divided into two load steps. At first, the lateral and transverse pressure is applied. Then, the displacement and the stress caused by the first step are brought to the second load step, which is the axial compression. The results show that the ultimate strength of panels under combined loading is lower than the single loading. © 2023 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 IGF27 chairpersons Keywords: ultimate strength; stiffened panel; bulk carrier; finite element analysis; IACS-CSR 1. Introduction Nowadays, transportation is very useful for human life. One of them is sea transportation which is widely used [Dabit et al., 2020; Nubli et al., 2022]. Due to its huge trading volume and the low cost of ship transportation, sea 27th International Conference on Fracture and Structural Integrity (IGF27) Ultimate strength value of stiffened panel designs under initial displacement and applied pressure: FE analysis vs. IACS-CSR Yogie Muhammad Lutfi a , Ristiyanto Adiputra b, *, Aditya Rio Prabowo a, *, Nurul Muhayat a , Hermes Carvalho c , Tiago Fazeres-Ferradosa d a Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta, Indonesia b Research Center for Hydrodynamics Technology, National Research and Innovation Agency (BRIN), Surabaya, Indonesia c Department of Structural Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil d Department of Civil Engineering, University of Porto, Porto, Portugal 27th International Conference on Fracture and Structural Integrity (IGF27) Ultimate strength value of stiffened panel designs under initial

*Corresponding author. Tel.: +62-271-632-163; fax: +62-271-632-163. E-mail address: ristiyanto.adiputra@brin.go.id (R.A.); aditya@ft.uns.ac.id (A.R.P.) *Corresponding author. Tel.: +62-271-632-163; fax: +62-271-632-163. E-mail address: ristiyanto.adiputra@brin.go.id (R.A.); aditya@ft.uns.ac.id (A.R.P.)

2452-3216 © 2023 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 IGF27 chairpersons 10.1016/j.prostr.2023.07.055 2452-3216 © 2023 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 IGF27 chairpersons 2452-3216 © 2023 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 IGF27 chairpersons