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http://dx.doi.org/10.3744/SNAK.2007.44.2.148

Integrated Structural Dynamic Response Analysis considering the UNDEX Shock Wave and Gas Bubble Pulse  

Lee, Sang-Gab (Korea Maritime University, Division of Naval Architecture and Ocean System Engineering)
Hwon, Jeong-Il (Korea Institute of machinery & Materials, e-Engineering Research Center)
Chung, Jung-Hoon (Korea Institute of machinery & Materials, e-Engineering Research Center)
Publication Information
Journal of the Society of Naval Architects of Korea / v.44, no.2, 2007 , pp. 148-153 More about this Journal
Abstract
Two typical impact loadings, shock wave and gas bubble pulse, due to UNDEX(UNDerwater EXplosion), should be considered together for the closest response analysis of structure subjected to UNDEX to a reality. Since these two impact loadings have different response time bands, however, their response characteristics of structure are different from each other. It is impossible to consider these effectively under the current computational environment and the mathematical model has not yet been developed. Whereas Hicks model approximates the fluid-structure interaction due to gas bubble pulse as virtual mass effect, treating the flow by the response of gas bubble after shock wave as incompressible ideal fluid contrary to the compressible flow due to shock wave, Geers-Hunter model could make the closest response analysis of structure under UNDEX to a real one as a mathematical model considering the fluid-structure interaction due to shock wave and gas bubble pulse together using acoustic wave theory and DAA(Doubly Asymptotic Approximation). In this study, the application and effectiveness of integrated dynamic response analysis of submerged structure was examined with the analysis of the shock wave and gas bubble pulse together.
Keywords
UNDerwater Explosion; Shock wave; Gas bubble pulse; Hicks model; Geers-Hunter model; Integrated structural dynamic response analysis;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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