Deflection and fracture of a clamped plate under lateral indentation by a sphere

Gong, Yufeng; Gao, Yingxin; Xie, De; Liu, Jingxi

doi:10.1016/j.oceaneng.2015.04.075

Cited by 12 publications

(7 citation statements)

References 16 publications

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“…The critical indentation depth of the outer and inner stiffened plates can also differ in each case. Therefore, it is difficult to predict the failure of the double hull structure analytically because only a simple formula has been utilized to predict plate fracture [17,[45][46][47]. Moreover, the energy absorbed by the outer stiffened plate increases steadily after plate fracture arises in both specimens.…”

Section: Numerical Resultsmentioning

confidence: 99%

Experimental and numerical investigation of the responses of scaled tanker side double-hull structures laterally punched by conical and knife edge indenters

Zhang

Liu

et al. 2018

Marine Structures

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This paper addresses experimental and finite-element simulation studies on scaled double-hull side structures quasi-statically punched at the mid-span by conical and knife edge indenters to examine their fracture behaviors and energy dissipation mechanisms. The specimen, scaled from a tanker double side, accounts for one span of the stringers in length and two spans of the web frames in width. The experimental results show that a double hull punched by a conical indenter shows much stronger resistance than that of a double hull punched by a knife edge indenter in severe collisions due to a difference in the fracture mode, while the double hull performs better in minor collisions punched by the knife edge indenter due to the deformation mode. In addition, numerical simulations are also carried out for the corresponding scenarios by the explicit LS-DYNA finite element solver. A relatively fine mesh in the contact area is used to capture the fracture initiation and propagation of the two specimens. The resistance-penetration curves and the deformations are compared with those observed in experiments, and these results match well. The numerical analysis discusses some aspects of particular relevance to the response of ship structures suffering accidental loads, including the importance of specifying the joining details, the influences of failure criteria, material relations on simulating complex structures, and application of scaling laws in assessing the impact response of full-scale structure.

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Section: Numerical Resultsmentioning

confidence: 99%

Experimental and numerical investigation of the responses of scaled tanker side double-hull structures laterally punched by conical and knife edge indenters

Zhang

Liu

et al. 2018

Marine Structures

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“…Thus the problem is transformed into two-dimensional problem and only one strip line is used to derive the whole resistance (Simonsen and Lauridsen 2000;Wang et al 1998;Lee et al 2004;Gong et al 2015). Therefore, a rectangular plate subjected to line or rectangular area load in the middle position is proposed, where the straight strip lines representing the membrane stretching mapped from the edge of the indenter to the edge of the plate and the plate bending is omitted, Figure 2c.…”

Section: Deformation Pattern Of the Platementioning

confidence: 99%

“…The diameters of bolt holes in the tested plates and flanges are 2 mm larger than the bolts for assembly requirements. This fixation method has been applied by Gong et al (2015), and Cho and Lee (2009) and is proved to provide clamped boundary condition.…”

Section: Analytical Expressionsmentioning

confidence: 99%

“…Lee et al (2004) argued that the fracture prediction of a plate indented by a sphere has relation with both the accumulated equivalent plastic strain and the stress triaxiality. Gong et al (2015) established a semi-analytical approach to predict the energy dissipation up to failure and it was validated by a series of experiments including clamped circular, square and rectangular plates indented by conical indenters with various radius. Besides, Shen (1995), Shen (2002), and Shen et al (2002) made much research on the theoretical analysis of dynamic response of a thin circular plate struck transversely by a mass striker with a conical head or a spherical nose and the predicted responses agreed well with the experiment results.…”

Section: Introductionmentioning

confidence: 99%

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On resistance of a rectangular thin plate under lateral indentation by a wedge indenter

Zhang

Liu

et al. 2018

Ships and Offshore Structures

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“…Similar to the ultimate strength, the lateral deflection behavior of the perforated plates depends on a variety of factors, such as opening size, slenderness ratio, aspect ratio, loading condition, and boundary conditions [9,10]. However, most prior research had been focused on the ultimate strength of the plate rather than the lateral deflection of the plate.…”

Section: Introductionmentioning

confidence: 99%

Lateral Deflection Behavior of Perforated Steel Plates: Experimental and Numerical Approaches

Kim

Park

Kim

et al. 2021

JMSE

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This study aimed to investigate the behavioral characteristics of the lateral deflection of a simply supported perforated steel plate subjected to axial compression. Investigating the lateral deflection of the perforated plate is of great significance because the buckling limit of structural members can be predicted not only by strength but also by displacement (or deflection). For this purpose, we conducted buckling experiments by considering various variables of the perforated plate, such as opening size, thickness, and aspect ratio. In addition, a series of elastoplastic large deflection analyses were performed using the commercial finite element analysis program, and the calculated results were compared along with the experimental results. Finally, practical curves, which can predict lateral deflection with an increase in axial displacement, and the occurrence point of ultimate strength are reported in this study. The results showed that there was a distinct difference in the behavior of lateral deflection between perforated plates with different opening ratios. The local buckling occurred mainly around the opening and was more dominant with an increase in the opening ratio. In addition, the ultimate strength of the perforated plate was determined at the end of the local buckling phase.

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Deflection and fracture of a clamped plate under lateral indentation by a sphere

Cited by 12 publications

References 16 publications

Experimental and numerical investigation of the responses of scaled tanker side double-hull structures laterally punched by conical and knife edge indenters

Experimental and numerical investigation of the responses of scaled tanker side double-hull structures laterally punched by conical and knife edge indenters

On resistance of a rectangular thin plate under lateral indentation by a wedge indenter

Lateral Deflection Behavior of Perforated Steel Plates: Experimental and Numerical Approaches

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