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Ultimate Longitudinal Capacity of Damaged Large-scale Double Shell Oil Tanker

Author: XuSha
Tutor: ZhaoYao
School: Huazhong University of Science and Technology
Course: Design and manufacture of ships and marine structures
Keywords: Large double-hull tankers Break parameters Longitudinal ultimate moment Smith simplified method
CLC: U661.43
Type: Master's thesis
Year: 2007
Downloads: 43
Quote: 2
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Abstract


All ship during the voyage , are facing the risk of collisions and groundings average accident . After the ship was damaged , will not only cause serious economic losses , will cause incalculable impact on the marine environment due to leakage of fuel or liquid cargo . , IMO mandatory provisions made ??in 2001 , the phasing out of single-hull tankers to avoid spill fuel or liquid cargo in the ship after damage occurred . However, due to the overall strength of the local intensity of the damaged hull has been greatly weakened in rescue, towage hull still possible because of insufficient strength , causing further damage to the inner shell , the occurrence of leakage even sinking . Ship Science , Research damaged hull vertical ultimate bearing capacity of great practical significance . Evaluation of double-hull tankers total vertical ultimate bearing capacity of the most important indicators of overall longitudinal ultimate moment , ultimate bearing capacity of Hull There are four main formula method , nonlinear finite element method , ie parsing , idealized structural units and Smith simplified method . Smith simplified method is a relatively simple principle and computationally efficient numerical methods . Based on Smith simplify the design and calculation of the break in a variety of location, size , shape, under the conditions the of 105000t double hull tankers of total vertical ultimate moment , in the cross-section of the stress distribution , an important indicator of the neutral axis position , and based on these calculations analysis results , summarized the correspondence between the series the break parameters hull vertical ultimate moment and its variation , including the bottom and side break position change on the ultimate moment of total vertical , bottom and side the break size change longitudinal ultimate moment of impact , bottom and side crevasse shape changes longitudinal ultimate moment .

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CLC: > Transportation > Waterway transport > Marine Engineering > Ship Principle > Ship structural mechanics > Ship structural strength
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