[2014] Dynamic Structural Response Characteristics of Stiffened Blast Wall under Explosion Loads > Selected Papers

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[2014] Dynamic Structural Response Characteristics of Stiffened Blast …

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Journal of the Society of Naval Architects of Korea
Vol.51, No.5, pp.380-387, October 2014

Dynamic Structural Response Characteristics of Stiffened Blast Wall under Explosion Loads

Author(s): Sang Jin Kim, Jung Min Sohn, Jong Chan Lee, Chun Bao Li, Dong Jin Seong, Jeom Kee Paik

Abstract : Piper Alpha disaster drew attention to the damage likely to arise from explosions and fires on an offshore platform. And great concerns have been increased to prevent these hazards. Blast wall is one of the passive safety systems; it plays a key part of minimizing the consequences. However, a buckling due to explosion loads is a factor which can reduce the strength of blast wall. The buckling often occurs between web and flange at the center of blast wall. This study aims to find a solution for reinforcing its strength by installing a flat plate at the spot where the buckling occurs. First of all, ANSYS finite element method is adopted to numerically compute the structural resistance characteristic of blast wall by using a quasi-static approach. Sequentially, the impact response characteristics of blast wall are investigated the effect on thickness of flat plate by using ANSYS/LS-DYNA. Finally, pressure-impulse diagrams (P-I diagram) are presented to permit easy assessment of structural response characteristics of stiffened blast wall. In this study, effective use is made to increase structural intensity. of blast wall and acquired important insights have been documented.

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