폭발 하중을 받는 보강된 방폭벽의 동적 구조 응답특성에 관한 연구
Dynamic Structural Response Characteristics of Stiffened Blast Wall under Explosion Loads
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Piper Alpha disaster drew attention to the damage likely to arise from explosions and fires on an offshore platform. And great concernshave been increased to prevent these hazards. Blast wall is one of the passive safety systems; it plays a key part of minimizing theconsequences. However, a buckling due to explosion loads is a factor which can reduce the strength of blast wall. The buckling oftenoccurs between web and flange at the center of blast wall. This study aims to find a solution for reinforcing its strength by installing aflat plate at the spot where the buckling occurs. First of all, ANSYS finite element method is adopted to numerically compute thestructural resistance characteristic of blast wall by using a quasi-static approach. Sequentially, the impact response characteristics ofblast wall are investigated the effect on thickness of flat plate by using ANSYS/LS-DYNA. Finally, pressure-impulse diagrams (P-Idiagram) are presented to permit easy assessment of structural response characteristics of stiffened blast wall. In this study, effectiveuse is made to increase structural intensity. of blast wall and acquired important insights have been documented.
Abstract
Piper Alpha disaster drew attention to the damage likely to arise from explosions and fires on an offshore platform. And great concernshave been increased to prevent these hazards. Blast wall is one of the passive safety systems; it plays a key part of minimizing theconsequences. However, a buckling due to explosion loads is a factor which can reduce the strength of blast wall. The buckling oftenoccurs between web and flange at the center of blast wall. This study aims to find a solution for reinforcing its strength by installing aflat plate at the spot where the buckling occurs. First of all, ANSYS finite element method is adopted to numerically compute thestructural resistance characteristic of blast wall by using a quasi-static approach. Sequentially, the impact response characteristics ofblast wall are investigated the effect on thickness of flat plate by using ANSYS/LS-DYNA. Finally, pressure-impulse diagrams (P-Idiagram) are presented to permit easy assessment of structural response characteristics of stiffened blast wall. In this study, effectiveuse is made to increase structural intensity. of blast wall and acquired important insights have been documented.
참고문헌 (15)
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