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http://dx.doi.org/10.3744/SNAK.2022.59.6.413

A Study on Optimal Design of Blast Hardened Bulkheads to Reduce Vulnerability against Various Hit Scenarios  

Myojung, Kwak (R&D Institute, Daewoo Shipbuilding and Marine Engineering Co., Ltd.)
Seungmin, Kwon (R&D Institute, Daewoo Shipbuilding and Marine Engineering Co., Ltd.)
Yoojeong, Noh (School of Mechanical Engineering, Pusan National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.59, no.6, 2022 , pp. 413-422 More about this Journal
Abstract
Blast Hardened Bulkheads (BHB) are used to suppress damage propagation by internal explosions to reduce ships'vulnerability. However, for this reason, the weight of the ship inevitably increased, and other functions such as the ships'mobility were bound to deteriorate. Therefore, it is essential in the initial design of the ship to optimize the dimensions of the bulkhead to minimize the weight while decreasing the vulnerability of the ship. Research on design optimization of BHB has been conducted, but it has not considered explosive load in various hit scenarios. This study proposed an optimal design method for the curtain plate type blast hardened bulkhead, which is currently frequently applied by the Korean Navy in consideration of various hit scenarios. Using genetic algorithms, multiobjective design optimizations that minimize weight increase as well as minimize damage to ships were obtained. By optimizing the dimensions of the BHB considering various hit scenarios, the ship's vulnerability was improved while maintaining its mobility due to weight reduction.
Keywords
Blast Hardened Bulkhead(BHB); Optimization; Genetic algorithm; Vulnerability;
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Times Cited By KSCI : 4  (Citation Analysis)
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