Numerical estimation of ultimate strength on double hull oil tanker cargo area

Alie, Muhammad Zubair Muis; Fathurahkman, M.; Juswan,; Prasetyo, Fredhi Agung

doi:10.1201/9781003230373-14

Cited by 2 publications

(3 citation statements)

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“…The work described in article [29] used a numerical analysis for predicting the maximum durability of the cargo area of double-hull oil tankers. Two Double Hull Oil Tankers were selected for their study's subject.…”

Section: Literature Reviewmentioning

confidence: 99%

Ship Lateral Plate Stiffening and Longitudinal Support Structure

Okello

2024

Preprint

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It is commonly recognized that a ship’s ability to maintain stability is dependent upon the way its loads are distributed. This means making sure the center of gravity is sufficiently low and evenly distributed. Yet when a ship encounters turbulent water with extremely large wave amplitudes, load distribution is a critical factor in determining how stressed the ship becomes. In particular, this article examines several methods for increasing the ship's longitudinal strength to prevent ship structural damage during hogging and sagging. This research presents a number of proposed techniques to enhance the longitudinal strength of cargo ships in order to guarantee minimal stress and deformation during sagging and hogging. The first method is the stern-to-bow use of curved support structures to increase the longitudinal strength of a cargo ship. And another way to stiffen the lateral plate is the proposed use of different designs of the side plate, such as wavy curves, stars, etc. To further boost the strength, the lateral plate upper part is suggested to curve upward. A numerical simulation using ANSYS of the stiffened plate when subjected to uniform load distribution and fixed support on either end shows that there is a decrease in deformation of the plate when we use wavy curved plates compared with those of the other plate stiffening methods used, and furthermore, curving the plate on top increases its strength during sagging as well as hogging. Finally, the use of a curved support structure further enhanced the overall longitudinal strength of the vessel.

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Section: Literature Reviewmentioning

confidence: 99%

Ship Lateral Plate Stiffening and Longitudinal Support Structure

Okello

2024

Preprint

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“…The simulation results are shown in Figures 10,11,12,13,14,15,16,and 17. The recapitulation of the maximum stress analysis results for the construction and the maximum deformation is shown in Table 4.…”

Section: E Stress and Deformation Of Modelmentioning

confidence: 99%

“…Likewise, Pawar et al (2022) studied the structural strength of crossing vessels using the FE method [14]. Alie et al (2021) estimated the ultimate strength of the double-hull oil tanker cargo area using numerical analysis under the influence of hogging and sagging conditions [15]. Alie et al (2022) modified the double bottom to determine the limit strength of the structure using numerical simulations under the influence of the global load of the structure [16].…”

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confidence: 99%

Numerical Investigation of the Laying of Airbag Arrangements on Launching Barges

Bin Muhammad Saleh,

Gonawan,

Ikhwani

et al. 2023

IJMEIR

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Ship-launching technology is developing rapidly in an effort to reach a point of economic efficiency, time efficiency, security, and flexibility. On the one hand, risks to the process of launching ships using airbags are still present and can occur. Exploding airbags due to the inability to withstand the load has implications for structural damage. Excessive pressure on the airbags can cause structural deformation. This study aims to determine the effect of airbag pressure on the strength of the ship's structure. This study uses finite element-based software to analyze stresses and deformations in ship construction when interacting with airbags. From this study, it was found that the number of airbags used in the two-row layout and cross-over arrangement was 14, with the status of the airbags in terms of load distribution being safe (not broken). The maximum stress value obtained from the simulation on the two-row arrangement layout is 11.62 MPa when it is right in the frame and 9.83 MPa when it is between frames. As well as in the cross-over arrangement layout, the maximum stress is 20.24 MPa when in the frame and 13.84 MPa when in between frames. This phenomenon occurs because of the stress concentration in the frame.

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Numerical estimation of ultimate strength on double hull oil tanker cargo area

Cited by 2 publications

References 0 publications

Ship Lateral Plate Stiffening and Longitudinal Support Structure

Ship Lateral Plate Stiffening and Longitudinal Support Structure

Numerical Investigation of the Laying of Airbag Arrangements on Launching Barges

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