A study on forces generated on spherical type LNG tank with central cylindrical part under various static loading

The number of fabrication shop for spherical type LNG tank is proportional to that of the tank radius to be constructed. Due to limitation of facility investment including building sites, it is practically difficult to fabricate various size tanks with perfectly spherical shape in the yards. The eff...

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Bibliographic Details
Published in:International journal of naval architecture and ocean engineering 2016, 8(6), , pp.530-536
Main Authors: Shin, Sang-Hoon, Ko, Dae-Eun
Format: Article
Language:English
Subjects:
Central cylindrical part
Circumferential force
Meridional force
Simplified analysis method
Spherical type LNG tank
조선공학
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Summary:The number of fabrication shop for spherical type LNG tank is proportional to that of the tank radius to be constructed. Due to limitation of facility investment including building sites, it is practically difficult to fabricate various size tanks with perfectly spherical shape in the yards. The efficient method to be capable of increasing cargo tank volume is to extend vertically the conventional spherical type LNG tank by inserting a cylindrical shell structure. The main purpose of this study is to derive related equations on forces generated on spherical type LNG tank with central cylindrical part under various static loadings in order to establish the simplified analysis method for the initial estimate. In this study, equations on circumferential and meridional force have been derived and verified by relations with the reaction forces per unit length of equator.
ISSN:2092-6782
2092-6790
DOI:10.1016/j.ijnaoe.2016.07.001