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Structural Engineering and Mechanics Volume 68, Number 2, October25 2018 , pages 237-245 DOI: https://doi.org/10.12989/sem.2018.68.2.237 |
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An empirical formulation to predict maximum deformation of blast wall under explosion |
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Do Kyun Kim, William Chin Kuan Ng and Oeju Hwang
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| Abstract | ||
| This study proposes an empirical formulation to predict the maximum deformation of offshore blast wall structure that is subjected to impact loading caused by hydrocarbon explosion. The blast wall model is assumed to be supported by a simply-supported boundary condition and corrugated panel is modelled. In total, 1,620 cases of LS-DYNA simulations were conducted to predict the maximum deformation of blast wall, and they were then used as input data for the development of the empirical formulation by regression analysis. Stainless steel was employed as materials and the strain rate effect was also taken into account. For the development of empirical formulation, a wide range of parametric studies were conducted by considering the main design parameters for corrugated panel, such as geometric properties (corrugation angle, breadth, height and thickness) and load profiles (peak pressure and time). In the case of the blast profile, idealised triangular shape is assumed. It is expected that the obtained empirical formulation will be useful for structural designers to predict maximum deformation of blast wall installed in offshore topside structures in the early design stage. | ||
| Key Words | ||
| empirical formulation; offshore blast wall; explosion; deformation; structural design | ||
| Address | ||
| Do Kyun Kim: 1) Ocean and Ship Technology Research Group, Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia 2) Graduate Institute of Ferrous Technology, POSTECH, 37673 Pohang, Republic of Korea William Chin Kuan Ng: Ocean and Ship Technology Research Group, Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia Oeju Hwang: McDermott Asia Pacific, 50250 Kuala Lumpur, Malaysia | ||