Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Prediction of Damage Extents due to In-Compartment Explosions in Naval Ships

내부 폭발에 의한 함정의 손상 예측

  • Wonjune Chang (Department of Naval Architecture and Ocean Engineering, Inha University) ;
  • Joonmo Choung (Department of Naval Architecture and Ocean Engineering, Inha University)
  • 장원준 (인하대학교 조선해양공학과) ;
  • 정준모 (인하대학교 조선해양공학과)
  • Received : 2023.07.08
  • Accepted : 2024.01.08
  • Published : 2024.02.20
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Abstract

In order to reasonably predict damage extents of naval ships under in-compartment explosion (INCEX) loads, two conditions should be fulfilled in terms of accurate INCEX load generation and fracture estimation. This paper seeks to predict damage extents of various naval ships by applying the CONWEP model to generate INCEX loads, combined with the Hosford-Coulomb (HC) and localized necking (LN) fracture model. This study selected a naval ship with a 2,000-ton displacement, using associated specifications collected from references. The CONWEP model that is embedded in a commercial finite element analysis software ABAQUS/Explicit was used for INCEX load generation. The combined HC-LN model was used to simulate fracture initiation and propagation. The permanent failures with some structural fractures occurred where at the locations closest to the explosion source points in case of the near field explosions, while, some significant fractures were observed in way of the interfaces between bulkheads and curtain plates under far field explosion. A large thickness difference would lead to those interface failures. It is expected that the findings of this study enhances the vulnerability design of naval ships, enabling more accurate predictions of damage extents under INCEX loads.

Keywords

Acknowledgement

이 연구는 해양수산부가 지원하는 한국해양과학기술진흥원(KIMST)의 해양수산기술개발사업(No. 202202103)과 산업통상자원부가 지원하는 한국에너지기술평가원의 에너지기술기획사업(No. 20213000000030)의 지원을 받아 수행되었음.

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