Dynamic Pressure Distribution due to Horizontal Acceleration in Spherical LNG Tank with Cylindrical Central Part

Spherical LNG tanks having many advantages such as structural safety are used as a cargo containment system of LNG carriers. However, it is practically difficult to fabricate perfectly spherical tanks of different sizes in the yard. The most effective method of manufacturing LNG tanks of various cap...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-11, Vol.269 (1), p.12082
Main Authors: Ko, Dae-Eun, Shin, Sang-Hoon
Format: Article
Language:English
Subjects:
Cylindrical tanks
Dynamic loads
Dynamic pressure
Horizontal distribution
Pressure distribution
Production methods
Spherical tanks
Static loads
Stress concentration
Structural safety
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Summary:Spherical LNG tanks having many advantages such as structural safety are used as a cargo containment system of LNG carriers. However, it is practically difficult to fabricate perfectly spherical tanks of different sizes in the yard. The most effective method of manufacturing LNG tanks of various capacities is to insert a cylindrical part at the center of existing spherical tanks. While a simplified high-precision analysis method for the initial design of the spherical tanks has been developed for both static and dynamic loads, in the case of spherical tanks with a cylindrical central part, the analysis method available only considers static loads. The purpose of the present study is to derive the dynamic pressure distribution due to horizontal acceleration, which is essential for developing an analysis method that considers dynamic loads as well.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/269/1/012082