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http://dx.doi.org/10.3744/SNAK.2005.42.6.631

Comparison of UNDEX Whipping Response of Hull Girder according to Modeling Methods  

Kwon, Jeong-Il (Korea Maritime University, Division of Ocean System Engineering)
Chung, Jung-Hoon (Korea Institute of Machinery & Materials, e-Engineering Research Center)
Lee, Sang-Gab (Korea Maritime University, Division of Ocean System Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.42, no.6, 2005 , pp. 631-636 More about this Journal
Abstract
One and three dimensional whipping response analyses of a naval surface combatant subjected to an underwater explosion bubble pulse were carried out to compare the efficiency and accuracy according to the modeling methods. In 1-D analysis, program UNDEXWHIP developed by KIMM was used, which is based on the thin-walled Timoshenko's beam theory and on the modal analysis method using wetted vibratory modes of the hull girder. In 3-D analysis, three finite element models were suggested using LS-DYNA/USA code, such as 3-D beam model considering geometric shape of wetted side shell, coarse and fine 3-D F.E. models. Through the comparison of results from the 1-D and 3-D analyses, it could be confirmed that 1-D analysis result is in good agreement with 3-D analysis ones, and that fine 3-D F.E. model, shock analysis one, is also used both in the shock response and whipping response analyses for the analyst effort and time savings.
Keywords
Whipping response; UNDerwater eXplosion(UNDEX); Bubble pulse; Shock response; Hull girder;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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