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The Research of Simplified Model Evaluation Based in the Main Damaged Ship Hull Residual Strength’s Appraisal Method

Author: LiHaiYing
Tutor: NieWu
School: Harbin Engineering University
Course: Design and manufacture of ships and marine structures
Keywords: Laser bombs Torpedo Residual strength Regression analysis
CLC: U674.7
Type: Master's thesis
Year: 2006
Downloads: 82
Quote: 1
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Abstract


Calculate the residual strength of the damaged hull is one of the important aspects of the Ship Survivability . In the calculation process , the counterparts on the residual strength has made ??a lot of efforts in the past, a considerable workload for the the ship main hull is damaged residual strength evaluation , which considering how simple a formula completing. In this paper, a ship , for example , the residual strength of the main hull suffered after laser bomb and torpedo attack . Most of the research on the problem of residual strength in the past just to calculate the result of a particular point of explosion , multiple explosion point is selected in accordance with the relevant information to do a series of calculations . This paper first analyzes the break location and size , to of the asymmetric profile parameters to do the calculation . With different weapons hit parts of the hull , according to the position of the hull was shot , damage can be divided into the damaged above the waterline and below the waterline . Hull suffered laser bomb attack , the damaged area is generally located above the waterline . In the break size and position of the given case , according to the node unit sectional program , determine the breakage of the unit number, has developed a program for data processing, the elastic limit bending as the standards of the residual strength check . Hull suffered a torpedo attack , damaged position generally below the waterline , the compartment water , external load changes , this paper Vlasov method of hull damage after the external load . Last remaining strength than nuclear plastic ultimate moment as standard , calculated different the damaged profile at the plastic limit moment , on this basis , draw a curve of the plastic limit bending moment along the Captain and trends do simple regression analysis . Public limited data , and regression analysis requires more data , carried out a series of assumptions . Then use software on the data obtained , the regression process , obtained several simplified Spectrum . Drawn maps to facilitate the analysis of the residual strength of Ship Survivability research also has certain reference value .

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CLC: > Transportation > Waterway transport > Marine Engineering > Various types of vessels > Military ships ( warships )
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