A Study on the Improvement of Collision Buffer Bow Characteristics for a Sharp Entrance Angle Bow Structure

A comparative collision study of a conventional bulbous bow and a sharp entrance angle bow structure was conducted using elasto-plastic finite element analysis to demonstrate the superior collision buffer bow characteristics of the sharp entrance angle bow structure. Further improvements that optimi...

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Bibliographic Details
Published inJournal of the Japan Society of Naval Architects and Ocean Engineers Vol. 11; pp. 199 - 206
Main Authors Takaoka, Yukichi, Yagi, Seiichiro, Kumamoto, Hideki, Yoshikawa, Takao
Format Journal Article
LanguageJapanese
English
Published Tokyo The Japan Society of Naval Architects and Ocean Engineers 2010
Japan Science and Technology Agency
Subjects
Architecture
Buffers
Entrances
Hybrid structures
Marine
Oceans
Panels
Polyurethane foam
Polyurethane resins
Structural steels
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Summary:A comparative collision study of a conventional bulbous bow and a sharp entrance angle bow structure was conducted using elasto-plastic finite element analysis to demonstrate the superior collision buffer bow characteristics of the sharp entrance angle bow structure. Further improvements that optimize the design and energy absorption of the sharp entrance angle bow structure by replacing the longitudinal stiffened steel panels of outer shells with hybrid structures composed of polyurethane elastomer cores and steel faceplates were proposed. In addition, the stem structure replaced with the hybrid structure with a polyurethane foam core was also proposed. The new structures eliminate the number of framing members to simplify construction to enhance the collision buffer characteristic of the present conventional structure.
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ISSN:1880-3717
1881-1760
DOI:10.2534/jjasnaoe.11.199