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Title |
Numerical Analysis of the Influencing Factors and Their Interrelationships on Non-ideal Explosive Behavior
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Authors |
신현섭(Hyun-Seop Shin) ; 김성욱(Sung-Wook Kim) ; 문재흠(Jae-Heum Moon) ; 김원우(Won-Woo Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2025.37.6.807 |
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Keywords |
비이상적 폭발; 크기효과; 폭발거동; 유한요소해석; ALE 해석기법 non-ideal explosion; size effect; explosive behavior; FE analysis; ALE method |
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Abstract |
Although numerous studies have investigated non-ideal explosions, such as size effects, relatively few have mechanistically analyzed behaviors resulting from chemical reactions. In this study, parameters and their interrelationships related to non-ideal explosions were examined from a mechanical viewpoint using FE analysis with the ALE method. By analyzing the volumetric strain distribution within the explosive cylinder, it was possible to compare the expansion of the reaction products according to the cylinder diameter, allowing inferences regarding the corresponding pressure growth. Furthermore, by quantifying the confinement level using a physical parameter, it was possible to objectively analyze the effect of initial conditions, such as diameter size, on the pressure development. Finally, it was found that in order to examine whether the FE model used can adequately account for size effects, one possible approach is to analyze key parameters and their relationships, including detonation velocity, reaction rate, and detonation energy. Evaluation of explosive behavior is essential to more accurately predict the blast resistance of structures. Continued analysis of explosive behaviors under varying initial conditions is necessary to generalize these findings.
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