Experiments and theory on deck and girder crushing

Simonsen, Bo Cerup; Ocakli, Hasan

doi:10.1016/s0263-8231(99)00015-4

Cited by 62 publications

(43 citation statements)

References 12 publications

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“…Moreover, the plating thickness has to be corrected to account for the stiffeners. Indeed, for ship-ship collisions, it has been shown in various references (see [121], [122], [144] or [180] for example) that these components mainly resist through an extensional membrane process, the bending effects being negligible. Consequently, it is suggested to smear them over the thickness, as explained in Appendix B.1 (section B.1.1).…”

Section: Geometrical Propertiesmentioning

confidence: 99%

Simplified analytical methods for the crashworthiness and the seismic design of lock gates

Buldgen

2015

Ship Technology Research

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2 AbstractThe design of navigation lock gates requires to account for accidental loads such as ship impacts or earthquakes, but it is quite difficult to handle with them. The most satisfactory way to investigate their effects is to perform numerical simulations. Such an approach can be justified at the late design stage, but it is quite commonly accepted that it is not well suited during the conception process. This may be justified by the calculation and modeling efforts that are usually prohibitive. Consequently, the aim of this thesis is to develop simplified methods to circumvent these difficulties. The dissertation is divided into two main parts.

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Section: Geometrical Propertiesmentioning

confidence: 99%

Simplified analytical methods for the crashworthiness and the seismic design of lock gates

Buldgen

2015

Ship Technology Research

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“…Through a similar procedure than the one detailed in [2][3][4][5][6][7][8][9][10][11][12][13], it is possible to evaluate the contribution of the four regions to the total power associated with SE1. So, for super-element n • i, we haveĖ i =Ė I +Ė II +Ė III +Ė IV , with the following expressions: Equations (3)- (6) provide a relation betweenĖ i and δ, which was precisely the law sought for evaluating the local resistance offered by SE1.…”

Section: Super-elementmentioning

confidence: 99%

“…The folding process has already been extensively study by Wierzbicki [12], Simonsen [9] and [10], Zhang [13] and Buldgen [2], amongst others. Therefore, we will just recall here some results developed in [2].…”

Section: Super-elementmentioning

confidence: 99%

“…Under the hypotheses that H a 1 and H a 2 , it can be shown [10] that this extension only implies a displacement field U (X, Z) oriented along the X axis. By neglecting the shearing energy produced by U (X, Z), the only contribution to membrane energy comes from an axial extension of the material fibres parallel to X axis.…”

Section: Super-elementmentioning

confidence: 99%

“…However, this topic is rarely reported in the literature. On the other hand, many analytical results are available to deal with ship-ship collisions, especially for evaluating the local crushing of the various components constituting the structure of a struck vessel (see for example, references [7][8][9][10][11][12][13]). All these developments may be used as a starting point for our analytical approach, but they are not sufficient, because the behaviour of an impacted gate may not directly be assimilated to the one of an impacted vessel.…”

Section: Introductionmentioning

confidence: 99%

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Fast strength assessment of mitre gates to ship impact

Buldgen

Sourne

Rigo

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Accidental Loads

Amdahl

2017

Encyclopedia of Maritime and Offshore Engineering

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The article deals with the analysis and design of ships against accidental actions with focus placed on the consequences of collision and grounding. Compared to offshore structures, the design against accidental actions is more indirect; the relatively few rules that exist for quantitative design against ship collisions and residual strength requirements are reviewed. Principles for design against collisions based on relative strength are discussed. Methods for analysis of the local behavior in the contact area and global hull motions during grounding and collision are described; for collisions, the decoupled approach of internal and external mechanics is explained. Assessment of local damage and energy dissipation during accidental actions by means of simplified plastic mechanism analysis is discussed. More recently, damage analysis with the nonlinear finite element method has become popular. The method has enormous potential, but a few challenges still exist, which are discussed. The assessment of hull girder strength, notably regarding bending moment capacity in damaged condition, and is addressed. Finally, some proposed improvements in ship design with respect to collision robustness are briefly discussed.

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Experiments and theory on deck and girder crushing

Cited by 62 publications

References 12 publications

Simplified analytical methods for the crashworthiness and the seismic design of lock gates

Simplified analytical methods for the crashworthiness and the seismic design of lock gates

Fast strength assessment of mitre gates to ship impact

Accidental Loads

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