Journal ArticleDOI
Practical techniques for finite element modeling to simulate structural crashworthiness in ship collisions and grounding (Part I: Theory)
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In this article, the authors developed practical techniques useful for FE modeling to simulate structural crashworthiness of ships in collisions or grounding, which can be applied to existing test structural models, which involve both crushing and fracture behavior, are shown by a comparison with the experimental results and corresponding FE simulations to confirm the validity of the proposed methods.Abstract:
The aim of this paper is to develop practical techniques useful for FE modeling to simulate structural crashworthiness of ships in collisions or grounding. Approaches to define relevant FE mesh size, material stress'strain relationship, and critical fracture strain and also to deal with the dynamic effects related to dynamic yield strength, dynamic fracture strain, inertia, and frictions are addressed so that the crushing and rupture behavior in collisions and grounding can be analyzed efficiently and accurately in the FE simulations. Benchmark studies on material tensile coupon test specimen and a perforated plate under axial tension are undertaken for the simulation of the fracture behavior. In a separate paper, applications on the existing test structural models, which involve both crushing and fracture behavior, are shown by a comparison with the experimental results and the corresponding FE simulations to confirm the validity of the proposed methods.read more
Citations
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Journal ArticleDOI
Direct measurements, numerical predictions and simple formula estimations of welding-induced biaxial residual stresses in a full-scale steel stiffened plate structure
Myung Su Yi,Sung Hwan Noh,Dong Hun Lee,Dong Houi Seo,Jeom Kee Paik,Jeom Kee Paik,Jeom Kee Paik +6 more
TL;DR: In this article, a full-scale steel stiffened plate structure in association with plate panels in bottom structures of an as-built containership carrying 1900 TEU was fabricated using exactly the same welding technology as used in today's shipbuilding industry.
Journal ArticleDOI
Numerical assessment of the structural crashworthiness of corroded ship hulls in stranding
TL;DR: In this article, the effect of steel corrosion degradation on the ship structural crashworthiness in grounding numerically, considering the reduction of the thickness of structural components and the loss of material mechanical properties due to corrosion.
Journal ArticleDOI
A comparative method for scaling SOLAS collision damage distributions based on ship crashworthiness – application to probabilistic damage stability analysis of a passenger ship
Fabien Conti,Hervé Le Sourne,Dracos Vassalos,Pentti Kujala,Daniel Lindroth,Sang Jin Kim,Spyros Hirdaris +6 more
TL;DR: A method that accounts for collision-based crashworthiness on ship damage distributions is introduced and it is concluded that installing a double hull on ship vulnerable zones leads to increased A-index.
Journal ArticleDOI
A new method for assessing the safety of ships damaged by collisions
TL;DR: In this article, the authors developed a method to predict the hull girder residual strength of double-hull oil tankers by considering probabilistic collision damage scenarios, and the relationship between the residual strength index and the collision damage index were identified in the form of diagrams.
Journal ArticleDOI
Probabilistic risk assessment on maritime spent nuclear fuel transportation—Part I: Transport cask damage probability
Robby Christian,Hyun Gook Kang +1 more
TL;DR: The proposed methodology to assess and reduce risks on Spent Nuclear Fuel packages from ship collisions with a probabilistic approach was successful in assisting decision making processes to minimize risks in maritime spent nuclear fuel transportation.
References
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Journal ArticleDOI
On the Crushing Mechanics of Thin-Walled Structures
Tomasz Wierzbicki,W. Abramowicz +1 more
ReportDOI
Strain-hardening and strain-rate effects in the impact loading of cantilever beams
G R Cowper,P S Symonds +1 more
Book
Ultimate limit state design of steel-plated structures
TL;DR: In this article, the authors present a semi-analytical method for the Elastic Plastic Large deflection Analysis of Plates under combined loading, and the Idealized Structural Unit Method is used for the analysis.
Journal ArticleDOI
Experimental and Theoretical Investigation of the Plastic Deformation of Cantilever Beams Subjected to Impulsive Loading
S. R. Bodner,Paul S. Symonds +1 more
Journal ArticleDOI
Inertia effects in axisymmetrically deformed cylindrical shells under axial impact
TL;DR: In this article, the axisymmetric buckling of elastic-plastic cylindrical shells subjected to axial impact is studied using a finite element analysis, which reveals that shells are both velocity and mass sensitive, so that larger energies can be absorbed by a shell for high-velocity impacts when decreasing the striking mass.
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