Crushing resistance of web girders in ship collision and grounding

Lin, Hong; Amdahl, Jørgen

doi:10.1016/j.marstruc.2008.02.001

Cited by 68 publications

(31 citation statements)

References 17 publications

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“…While in collision, previous works of Lehmann & Peschmann [33], Wiśniewski & Kołakowski [34], Hong & Amdahl [35], and Prabowo et al [36] can be used as reliable reference. These works were conducted by various methods, including finite element method, analytical concept, field survey of real-life phenomenon, and laboratory testing.…”

Section: Discussionmentioning

confidence: 99%

“…Demand to expand the studies to other marine vessels is fulfilled by Otto et al [51] and Prabowo et al [52] as Ro-Ro passenger ship is taken as observation object, where Otto directed his study on risk analysis for collision and grounding, and Prabowo focused his attention to structural behavior accounting for external dynamics of ship collision. Investigation of structural performance under impact load, especially in shoal grounding case was carried by Yu et al [53] where in ship collision case, concern on double hull design against impact load, failure, and oil spill were addressed by Hong and Amdahl [35], Pedersen & Li [54], Yip et al [55] and Hegazy et al [56]. Correlating with structural concern, as opening of northern sea route through arctic sea, study of impact is expanded into polar and arctic conditions which involve ice as indenter in impact process.…”

Section: Discussionmentioning

confidence: 99%

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Development in Calculation and Analysis of Collision and Grounding on Marine Structures and Ocean Engineering Fields

Prabowo¹,

Bae²,

Sohn³

et al. 2017

JAMB

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Various activities are conducted in oceanic territory in order to fulfil numerous demands. Ship has important role in these activities as transportation, supplier, and vessel which also directly connects with marine structures, such as offshore platform. Complex function of each facilities in this field makes chain reaction of one event can be remarkable and fatal. Accidental load becomes major consideration in operation of these marine and ocean facilities with famous example of accident phenomenon Titanic and Exxon Valdez have made related parties to perform sustainable analysis to develop assessment method, refine formula, propose prevention system, mitigation scheme, structural behavior, etc. In present work, a brief discussion in collision and grounding for related objects in scopes of marine structure and ocean engineering. The introduction is presented in initial part as presenting background, importance, and implication of impact engineering. Several examples are addressed to observe contribution this part in history of naval architecture. In next section, discussion is given in specific fields, namely ocean and marine engineering. Implementation of impact and accidental load are presented in conceptual method and material preparation. Results are described as milestone of collision and groundings' development. In later section, conclusion is summarized based on discussion and recommendation in performing analysis and calculation for collision and grounding are covered.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Development in Calculation and Analysis of Collision and Grounding on Marine Structures and Ocean Engineering Fields

Prabowo¹,

Bae²,

Sohn³

et al. 2017

JAMB

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show abstract

“…Despite the difference, the denting mode can be consistently applied to the analysis of the raking process (see Simonsen 1997). Hong and Amdahl (2008a) reviewed the existing theoretical models for local denting and proposed an improved theoretical model with two folding elements. The model captures more precisely the deformation process of a web girder under a concentrated load.…”

Section: Simplified Methods For Transverse Membersmentioning

confidence: 99%

Rapid assessment of ship grounding over large contact surfaces

Lin

Amdahl

2012

Ships and Offshore Structures

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A simple method for the rapid assessment of ship bottom structures subjected to grounding over seabed obstructions with large contact surfaces is proposed in this paper. It has been recognised that the shape and size of the seabed obstruction is of crucial importance in relation to the characteristics of bottom damage. Most studies on ship grounding are concerned with 'rock-type' sharp obstructions, where plate tearing is the dominating failure mode. However, very few studies are found related to grounding over blunt obstructions with large contact surfaces such as 'shoals'. Denting rather than tearing is more likely for the bottom plating as observed from actual grounding incidents. The sharp obstruction may cause earlier penetration and result in very unfavourable consequences such as compartment flooding. In contrast, the bottom plating may not fracture when moving over a blunt-type sea floor. But it may threaten the global hull girder resistance and give rise to even worse consequences such as hull collapse. The proposed simple method is established on the basis of a series of closed-form solutions for individual structural members developed from the plastic mechanism analysis. The primary deformation modes for the major bottom structural members are sliding deformation of longitudinal girders, denting and crushing of transverse members and indentation of bottom plating. The effect of friction is considered and estimated in a simple manner. The vertical resistance that governs the vertical ship motion is derived. It is found that the vertical resistance is free of friction. The proposed simple method for bottom strength is verified against large-scale non-linear finite element analyses, where a good correlation is obtained.

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“…(a) Initiation of plate folding [70] (b) Subsequent folding and concertina tearing [180] Figure 3.25. Folding mechanism of a plate impacted on its free edge…”

Section: Literature Reviewmentioning

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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Crushing resistance of web girders in ship collision and grounding

Cited by 68 publications

References 17 publications

Development in Calculation and Analysis of Collision and Grounding on Marine Structures and Ocean Engineering Fields

Development in Calculation and Analysis of Collision and Grounding on Marine Structures and Ocean Engineering Fields

Rapid assessment of ship grounding over large contact surfaces

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

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