Deformation behavior of a stiffened panel subjected to underwater shock loading using the non-linear finite element method

Jen, Chan-Yung; Tai, Yuh-Shiou

doi:10.1016/j.matdes.2009.06.011

Cited by 32 publications

(8 citation statements)

References 13 publications

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“…In the ship structure, the force types acting on a stiffened plate are in-plane compression or tension from the overall hull-girder bending moment or torsion, the shear force resulting from the hull-girder shear force, and lateral pressure from the external wave or shock loading [34]. However, the possibility that a ship structure will be damaged by several types of accidents, including striking and stranding with any other objects, is crucial to investigate [35].…”

Section: State Of the Artmentioning

confidence: 99%

Structural Resistance of Simplified Side Hull Models Accounting for Stiffener Design and Loading Type

Prabowo

Tuswan

Nurcholis

et al. 2021

Mathematical Problems in Engineering

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Thin-walled stiffened panels are fundamental structural components that form the primary structure of the ship hull. The effectiveness of the stiffener configuration design needs to be assessed because members are unavoidably subjected to various load types during operations. In this situation, assessment is required to quantify the responses and determine the relationship between the structural resistance and input parameters. The aim of this work was to obtain structural resistance data on the stiffened side hull of a medium-sized tanker with various model configurations by using finite element analysis with different loading parameters, i.e., load type and angle, as the main inputs. The results indicate that stiffener configurations subjected to loads at the center and random positions influence the effectiveness in reducing the deformation. The results show that the stiffener is more effective when the location of the force is very close to the stiffener. Therefore, higher strength can be obtained with a design in which the area that is not supported by the stiffener is minimized.

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Section: State Of the Artmentioning

confidence: 99%

Structural Resistance of Simplified Side Hull Models Accounting for Stiffener Design and Loading Type

Prabowo

Tuswan

Nurcholis

et al. 2021

Mathematical Problems in Engineering

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“…Figure 5 shows the finite element model and the meshing technique for the MICEPH surrounded by the fluid. The boundaries of the fluid around the MICEPH may cause shock wave reflection or refraction, which may cause a change in its superposition or cancellation by the incident wave [56,57]. To overcome this problem, the boundary condition of the fluid is executed as a non-reflective boundary condition during the analysis.…”

Section: Modeling and Simulation Of Micephmentioning

confidence: 99%

Numerical Analysis and Dynamic Response of Optimized Composite Cross Elliptical Pressure Hull Subject to Non-Contact Underwater Blast Loading

et al. 2019

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Among the most important problems confronted by designers of submarines is to minimize the weight, increase the payload, and enhance the strength of pressure hull in order to sustain the hydrostatic pressure and underwater explosions (UNDEX). In this study, a Multiple Intersecting Cross Elliptical Pressure Hull (MICEPH) subjected to hydrostatic pressure was first optimized to increase the payload according to the design requirements. Thereafter, according to the optimum design results, a numerical analysis for the fluid structure interaction (FSI) phenomena and UNDEX were implemented using nonlinear finite element code ABAQUS/Explicit. The propagation of shock waves through the MICEPH was analyzed and the response modes (breathing, accordion and whipping) were discussed. Furthermore, the acceleration, displacement and failure index time histories at different locations were presented. The results showed that the greatest acceleration occurred in the athwart direction, followed by the vertical and longitudinal directions. Additionally, the first bubble pulse has a major effect on athwart acceleration. Moreover, the analysis can be effectively used to predict and calculate the failure indices of pressure hull. Additionally, it provides an efficient method that reasonably captures the dynamic response of a pressure hull subjected to UNDEX.

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“…The boundaries of the fluid may cause shockwave refraction or reflection, resulting in its superposition or cancellation by the incident wave [21,22]. To prevent this phenomenon, the boundary condition of the fluid element is set as a nonreflective boundary during analysis except for the free surface where zero pressure boundary condition was applied to it as shown in Figure 3.…”

Section: Boundary Conditions and Fluid-structurementioning

confidence: 99%

Numerical Simulation and Response of Stiffened Plates Subjected to Noncontact Underwater Explosion

Fathallah

Tong

et al. 2014

Advances in Materials Science and Engineering

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A numerical simulation has been carried out to examine the response of steel plates with different arrangement of stiffeners and subjected to noncontact underwater explosion (UNDEX) with different shock loads. Numerical analysis of the underwater explosion phenomena is implemented in the nonlinear finite element code ABAQUS/Explicit. The aim of this work is to enhance the dynamic response to resist UNDEX. Special emphasis is focused on the evolution of mid-point displacements. Further investigations have been performed to study the effects of including material damping and the rate-dependant material properties at different shock loads. The results indicate that stiffeners configurations and shock loads affect greatly the overall performance of steel plates and sensitive to the materials data. Also, the numerical results can be used to obtain design guidelines of floating structures to enhance resistance of underwater shock damage, since explosive tests are costly and dangerous.

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Deformation behavior of a stiffened panel subjected to underwater shock loading using the non-linear finite element method

Cited by 32 publications

References 13 publications

Structural Resistance of Simplified Side Hull Models Accounting for Stiffener Design and Loading Type

Structural Resistance of Simplified Side Hull Models Accounting for Stiffener Design and Loading Type

Numerical Analysis and Dynamic Response of Optimized Composite Cross Elliptical Pressure Hull Subject to Non-Contact Underwater Blast Loading

Numerical Simulation and Response of Stiffened Plates Subjected to Noncontact Underwater Explosion

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