내부 폭발에 의한 함정의 손상 예측
Prediction of Damage Extents due to In-Compartment Explosions in Naval Ships
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참고문헌
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초록
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.
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.
참고문헌 (21)
- Cerik, B. C., "Revisiting MARSTRUCT benchmark study on sideshell collision with a combined localized necking and stressstate dependent ductile fracture model", Ocean Engineering, 187, pp.106173~ (2019)
- Cerminara, J., "Ship service electrical systems: designing for survivability", Naval Engineers Journal, 102(5), pp.32~36 (1990)
- Dennis, M. Gormley, "A low-visibility force multiplier-assessing China’s cruise missile ambitions" (2014), NDU Press
- Erdik, A., "On evaluation and comparison of blast loading methods used in numerical simulations", Sakarya University Journal of Science, 22(5), pp.1385~1391 (2018)
- Jung, S. K., "Arrangement method of a naval surface ship considering stability, operability, and survivability", Ocean Engineering, 187, pp.316~333 (2018)
- Kim, S. H, "Development of Blast Hardened Bulkheads with Attached Aluminum Foam", Division of Ocean Systems Engineering, 90 (2015)
- Kim, K, "Engagement-Scenario-Based Decoy-Effect Si mulation Against an Anti-ship Missile Considering Radar Cross Section and Evasive Maneuvers of Naval Ships", Journal of Ocean Engineering and Technology, 35(3), pp.238~246 (2021)
- Kim, H., "Shock-Resistance Responses of Frigate Equipments by Underwater Explosion", Journal of Ocean Engineering and Technology, 36(3), pp.161~167 (2022)
- Kim, K. S., "Naval ship’s sus ceptibility assessment by the probabilistic density function", Journal of Computational Design and Engineering, 1(4), pp.266~271 (2014)
- Kim, J.H., "A Study of Survivability Impro vement Method for Naval Ships′Design I-Design Method Considering Box Girder", Journal of Korean Navigation and Port Research, 27(2), pp.199~207 (2003)
- Airblast Parameters from TNT Spherical Air Burst and Hemispherical Surface Burst, "Kingery, C.", U.S. Army Ballistic Research Laboratory, ~, pp.Technical report ARBRL-TR-02555 (1984)
- Kok, S.L.Y., "Naval Survivability and Susptibility Reduction Study-Surface Ship", ~ (2012)
- Nho, I. S., "Preliminary structural design of blast hardened bulkhead (The 2nd Report: Scantling formula for curtain plate type blast hardened bulkhe ad)", Journal of the Society of Naval Architects of Korea, 55(5), pp.379~384 (2018)
- Park, S. J., "Comparative st udy on ductile fracture prediction of hightensile strength marine structural steels", Ships and Offshore Structures, 15, pp.208~219 (2020)
- Park, S. J., "Ductile Fracture of a Marine Structural Steel based on HC-DSSE Combined Fracture Strain Formulation", Journal of the Society of Naval Architects of Korea, 56(1), pp.82~93 (2019)
- Sriram, R., "Blast impact response of aluminum foam sandwich composites", Journal of Materials Science, 41, pp.4023~4039 (2006)
- TM 5-855-1: Design and Analysis of Hardened Structures to Conventional Weapons Effects, "USACE", ~ (1986)
- "A study on the simulation of blast actions on a monument structure" (2017)[URL]
- Williams, K., "Validation of a loading model for simulating blast mine effects on armoured vehicles", 7th International LS-DYNA Users Conference, pp.35~44 (2002)
- Yi, Z., "Blast load effects on highway bridges. I: Modeling and blast load effects", Journal of Bridge Engineering, 19(4), pp.04013023~ (2014)
- Yun, K. J., "Numerical analysis of the sub scale blast door deformation and the subsequent blast wave propagation through the tunnel by the external explosion", Journal of the Korea Institute of Military Science and Technology, 19(4), pp.462~468 (2016)