Effects of the geometrical imperfections on the ultimate strength performances: A case study on the designed-steel stiffened panel

Muhammad Imaduddin Hanif; Ristiyanto Adiputra; Aditya Rio Prabowo; Nurul Muhayat; Erwandi Erwandi; Nurul Huda

doi:10.1016/j.prostr.2023.07.003

Effects of the geometrical imperfections on the ultimate strength performances: A case study on the designed-steel stiffened panel

Muhammad Imaduddin Hanif, Ristiyanto Adiputra^*, Aditya Rio Prabowo^*, Nurul Muhayat, Erwandi Erwandi, Nurul Huda

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › Research › peer-review

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Abstract

In the analytical calculation of Hull Girder Ultimate Strength using Smith's method, the ship is divided into several elements, where each element contributes to the total bending capacity of the ship. At this point, the ultimate strength assessment of stiffened panels which is part of the ship hull elements must be conducted cautiously by taking into account the undesirable conditions. The present paper studies the ultimate strength of stiffened panels under variations of initial imperfection geometrics with a particular degree of severity. Additionally, the geometry variations of the stiffened panel model have been carried out to obtain results according to actual conditions. The analysis was conducted using the finite element method by the commercial software ANSYS, and then the results were compared using the results from IACS-CSR. In general, results show that the initial imperfection geometric greatly decreases the ultimate strengths at around 10% for standard initial imperfection geometric and at around 7.8% percent for severe imperfection.

Original language	English
Journal	Procedia Structural Integrity
Volume	47
Pages (from-to)	125-132
Number of pages	8
ISSN	2452-3216
DOIs	https://doi.org/10.1016/j.prostr.2023.07.003
Publication status	Published - 2023
Event	27th International Conference on Fracture and Structural Integrity - Rome, Italy Duration: 22 Feb 2023 → 24 Feb 2023

Conference

Conference	27th International Conference on Fracture and Structural Integrity
Country/Territory	Italy
City	Rome
Period	22/02/2023 → 24/02/2023

Keywords

Hull girder ultimate strength
IACS-CSR
Stiffened panel
Smith's method
Finite element method

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title = "Effects of the geometrical imperfections on the ultimate strength performances: A case study on the designed-steel stiffened panel",

abstract = "In the analytical calculation of Hull Girder Ultimate Strength using Smith's method, the ship is divided into several elements, where each element contributes to the total bending capacity of the ship. At this point, the ultimate strength assessment of stiffened panels which is part of the ship hull elements must be conducted cautiously by taking into account the undesirable conditions. The present paper studies the ultimate strength of stiffened panels under variations of initial imperfection geometrics with a particular degree of severity. Additionally, the geometry variations of the stiffened panel model have been carried out to obtain results according to actual conditions. The analysis was conducted using the finite element method by the commercial software ANSYS, and then the results were compared using the results from IACS-CSR. In general, results show that the initial imperfection geometric greatly decreases the ultimate strengths at around 10% for standard initial imperfection geometric and at around 7.8% percent for severe imperfection.",

keywords = "Hull girder ultimate strength, IACS-CSR, Stiffened panel, Smith's method, Finite element method",

author = "Hanif, {Muhammad Imaduddin} and Ristiyanto Adiputra and Prabowo, {Aditya Rio} and Nurul Muhayat and Erwandi Erwandi and Nurul Huda",

year = "2023",

doi = "10.1016/j.prostr.2023.07.003",

language = "English",

volume = "47",

pages = "125--132",

journal = "Procedia Structural Integrity",

issn = "2452-3216",

publisher = "Elsevier",

note = "27th International Conference on Fracture and Structural Integrity, IFG27 ; Conference date: 22-02-2023 Through 24-02-2023",

}

TY - GEN

T1 - Effects of the geometrical imperfections on the ultimate strength performances: A case study on the designed-steel stiffened panel

AU - Hanif, Muhammad Imaduddin

AU - Adiputra, Ristiyanto

AU - Prabowo, Aditya Rio

AU - Muhayat, Nurul

AU - Erwandi, Erwandi

AU - Huda, Nurul

PY - 2023

Y1 - 2023

N2 - In the analytical calculation of Hull Girder Ultimate Strength using Smith's method, the ship is divided into several elements, where each element contributes to the total bending capacity of the ship. At this point, the ultimate strength assessment of stiffened panels which is part of the ship hull elements must be conducted cautiously by taking into account the undesirable conditions. The present paper studies the ultimate strength of stiffened panels under variations of initial imperfection geometrics with a particular degree of severity. Additionally, the geometry variations of the stiffened panel model have been carried out to obtain results according to actual conditions. The analysis was conducted using the finite element method by the commercial software ANSYS, and then the results were compared using the results from IACS-CSR. In general, results show that the initial imperfection geometric greatly decreases the ultimate strengths at around 10% for standard initial imperfection geometric and at around 7.8% percent for severe imperfection.

AB - In the analytical calculation of Hull Girder Ultimate Strength using Smith's method, the ship is divided into several elements, where each element contributes to the total bending capacity of the ship. At this point, the ultimate strength assessment of stiffened panels which is part of the ship hull elements must be conducted cautiously by taking into account the undesirable conditions. The present paper studies the ultimate strength of stiffened panels under variations of initial imperfection geometrics with a particular degree of severity. Additionally, the geometry variations of the stiffened panel model have been carried out to obtain results according to actual conditions. The analysis was conducted using the finite element method by the commercial software ANSYS, and then the results were compared using the results from IACS-CSR. In general, results show that the initial imperfection geometric greatly decreases the ultimate strengths at around 10% for standard initial imperfection geometric and at around 7.8% percent for severe imperfection.

KW - Hull girder ultimate strength

KW - IACS-CSR

KW - Stiffened panel

KW - Smith's method

KW - Finite element method

U2 - 10.1016/j.prostr.2023.07.003

DO - 10.1016/j.prostr.2023.07.003

M3 - Conference article

SN - 2452-3216

VL - 47

SP - 125

EP - 132

JO - Procedia Structural Integrity

JF - Procedia Structural Integrity

T2 - 27th International Conference on Fracture and Structural Integrity

Y2 - 22 February 2023 through 24 February 2023

ER -

Effects of the geometrical imperfections on the ultimate strength performances: A case study on the designed-steel stiffened panel

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