Torsion dynamic analysis of a ship hull composite model

Chirica, Ionel; Beznea, Elena Felicia; Boazu, Doina

doi:10.1201/b11810-52

Cited by 4 publications

(9 citation statements)

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“…The methodology presented in the paper is based on a macro element model aimed to analyze the torsion ship hull dynamic treated as thin-walled beam. This methodology proposes an extended model for dynamic analysis using the macro element model treated in [16][17][18][19]. In the methodology, the outline of the section is considered as a polygonal one.…”

Section: General Hypothesismentioning

confidence: 99%

“…Due to the torsion loading of the thin-walled beam, in the strip plate the stretching-compression, bending, and shearing occur. The strip plate is treated as an Euler-Bernoulli beam [16][17][18][19]. The stiffness matrix and inertia matrix of the macroelement are obtained by assembling the stiffness and inertia matrices of the strips [16].…”

Section: General Hypothesismentioning

confidence: 99%

“…The methodology presented in this paper is treating in different ways and different hypothesis, depending on the type of cross-section: open and closed cross-sections in the papers developed in [16][17][18][19], where the appropriate mathematical model explaining how the finite strip method is applied for the static analysis of a composite hull is described. Therefore, in this paper, only the dynamic part of the model is presented.…”

Section: General Hypothesismentioning

confidence: 99%

“…In (11), the matricesK andK are stiffness matrix for warping torsion and stiffness matrix for free torsion, developed in [16][17][18][19].…”

Section: Specific Matrices Of the Macroelementmentioning

confidence: 99%

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Torsion Dynamic Behaviour of the Ship Hull Made out of Layered Composites

Chirica

2013

Mathematical Problems in Engineering

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This paper addresses the dynamic torsion behaviour of the ship hull with very large open decks. A short overview of the past research is presented, and several key findings and behavioral characteristics are discussed. In the paper, the author is focusing on the dynamic part of a new macroelement model used for torsion dynamic analysis of the ship hull made of composite materials. The numerical analysis (using two methods, one of them being a new proposed method) and experiments are developed on a simplified typical hull of a container ship. The torsion analysis is performed on a scale model of a container ship, made of layered composite plates, and the first 5 natural frequencies are determined. The results obtained with the proposed numerical method (software code TORS, made by the author) are compared with the results obtained with FE analysis and with the experiments done on the physical model.

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Section: General Hypothesismentioning

confidence: 99%

Section: General Hypothesismentioning

confidence: 99%

Section: General Hypothesismentioning

confidence: 99%

“…In (11), the matricesK andK are stiffness matrix for warping torsion and stiffness matrix for free torsion, developed in [16][17][18][19].…”

Section: Specific Matrices Of the Macroelementmentioning

confidence: 99%

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Torsion Dynamic Behaviour of the Ship Hull Made out of Layered Composites

Chirica

2013

Mathematical Problems in Engineering

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“…However, the study highlighted the importance of hydroelastic strength analysis in designing these types of ships. Chirică et al [13] explored various numerical and experimental techniques for analysing the torsional behaviour of composite ship hulls. Based on thin wall beam theory, their proposed method can serve as a quick calculation tool for ship hull torsion analysis.…”

Section: Introductionmentioning

confidence: 99%

Linear Longitudinal Strength Analysis of a Multipurpose Cargo Ship under Combined Bending and Torsional Load

Abedin,

Franklin,

Mahmud

2023

JMSE

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Cargo ships with wide hatches usually have thin walls and limited torsional rigidity. Consequently, conducting a comprehensive torsional analysis is important because these loads can exert a significant impact. In this paper, the structural response of a multipurpose cargo ship to combined bending and torsional loads is studied using finite element analysis. The bending and torsional moments are calculated following the rules and standard regulations followed by the classification society. The ship’s 3D finite element model was verified using beam theory and direct calculations. In contrast, the accuracy of torsional stress was confirmed by comparing thin wall girder theory with direct calculation results. This study thoroughly examined the impacts of the still water bending moment, the vertical wave bending moment, and the wave-induced torsional moment on the structural response of ships. Furthermore, it scrutinised the impact of torsion on both open-deck and closed-deck ships. Hull girder normal stresses at midship due to still water and the vertical wave bending moment are shown to contribute to almost 70% of total stress in an inclined condition; stresses resulting from the horizontal wave bending moment contribute nearly 10%, while warping stresses contribute approximately 20% in open-deck ships. It is also shown that torsion has little impact on closed-deck ships. Finally, a buckling analysis was conducted to assess the ship’s buckling criteria, confirming that the linear buckling criteria were satisfied.

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WITHDRAWN: Torsion dynamic behavior of the ship hull made of composite material

Chirica¹

2012

Computational Materials Science

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Torsion dynamic analysis of a ship hull composite model

Cited by 4 publications

References 0 publications

Torsion Dynamic Behaviour of the Ship Hull Made out of Layered Composites

Torsion Dynamic Behaviour of the Ship Hull Made out of Layered Composites

Linear Longitudinal Strength Analysis of a Multipurpose Cargo Ship under Combined Bending and Torsional Load

WITHDRAWN: Torsion dynamic behavior of the ship hull made of composite material

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