ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Vessels are rarely subjected to accidental loads such as the collision, grounding andstranding. But these accidental loads cause a lot of damages to hull structure including a largedeformation, fracture, tearing and so on. In case of carrying dangerous goods such as crude oil, theseaccidents can induce a serious environmental pollution. All ocean-going vessels were made bywelding. The welding residual stress is a significant shortcoming of welding remains at the hullstructure, even though welding technology in shipbuilding field has provided a variety of advantages,e.g. remarkable shortening of the shipbuilding time. The aim of this paper is to investigate the effectsof the residual stress in a grounding accident. When a ship runs aground against a sea-obstacle like arock, this accident can be classified as a grounding. Among parameters of grounding accidentscenarios such as the ship speed, the initial striking point, and loading conditions of the ship, only shipspeed varies from 10 to 15 knots under ballast condition with/without consideration of residualstress(this sentence is not clear to the read). The initial striking point is at the bow of the center line ofship. A series of nonlinear numerical simulations with large deformation and fracture were carried outusing LS-DYNA. As a result, two cases with residual stress have longer damage length. Thedifference seems to be relatively small, but not negligible
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2100.pdf
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