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Research of the Dynamic Stability of Bulkheads Subjected to the Transient Loads

Author: QiLei
Tutor: YaoXiongLiang
School: Harbin Engineering University
Course: Design and manufacture of ships and marine structures
Keywords: Underwater explosion Fluid-structure interaction Dynamic buckling Bulkhead
CLC: U661.43
Type: Master's thesis
Year: 2009
Downloads: 41
Quote: 0
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Abstract


Underwater explosion shock wave phase and the bubble pulse phase . Have a powerful impact in the explosion shock waves and bubbles pulsating load transient load the ship , and even make the bulkhead structure of dynamic instability . This paper studies the dynamic stability of the flexible member of the Underwater Explosion bulkheads, etc. , underwater explosion transient loads ship bulkheads and other the flexible structural stability calculation method and its anti instability , aimed at improve the bulkhead anti instability . The dynamic instability criterion - BR sports Standards to determine the response of structures under impact loading instability , calculated by the finite element software . Ship bulkhead structure is stiffened plate analysis of the reinforced structure by the impact load the dynamic stability of the member of the research bulkhead by underwater explosion shock dynamic stability with the reference value . By analyzing the factors that affect the dynamic stability of stiffened plate to improve the ability of the bulkhead anti instability . Dynamic stability factors affect the actual ship by Underwater Explosion bulkhead structure , the load subject to the bulkhead structure is very complicated to calculate the stability of the best way is to bulkhead structure in the entire ships and flow farm environment . The validity of the finite element calculation of the response of the ship structure has been the experimental verification of the real ship . Underwater explosion process and load analysis , the final proposed the underwater explosion BR Sporting Code . Through a large number of numerical experiments , some useful rules . Is found the bubble pulse has a great influence on the dynamic stability of the bulkhead structure , the calculation can not be ignored . Explosion angle of attack different bulkhead buckling mode and buckling load is different. The ship cabin layout affect the bulkhead dynamic stability , reasonable cabin layout can improve the ability of the ship's anti instability underwater explosion in the instability of the structure can be divided into three stages . This can be a reference for engineering design and calculation .

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