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http://dx.doi.org/10.7734/COSEIK.2022.35.5.317

Blast Analysis of Single Degree of Freedom Plant Structures Considering Static Displacement  

Lee, Jae-Kyoon (Department of Architecture, KonKuk University)
Lee, Seung-Hoon (Department of Architecture, KonKuk University)
Kim, Han-Soo (Department of Architecture, KonKuk University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.35, no.5, 2022 , pp. 317-324 More about this Journal
Abstract
In this paper, an analysis method that considers the initial static displacement of structural members using an equivalent single-degree-of-freedom system is presented. Newmark's dynamic analysis algorithm was improved to consider the effect of the initial static displacements of structural members. The effect of the initial static displacement on the maximum response according to the assumed duration of the blast load and natural period of the member was investigated. The effects of positive and negative static displacements on the maximum dynamic responses of structural members subjected to a positively applied blast load were also studied. Modified response charts for the shock-type and pressure-type waves are presented so that static displacements can easily be considered. Using a design example, we demonstrate the significance of the modified response chart that considers the static displacement. Based on the results of this study, the maximum response of a the structural member can be easily obtained whilst considering its initial static displacement. The modified response chart presented in this study can be used for the structural design of plants and military facilities.
Keywords
plant; static displacement; ductility; single degree of freedom (SDOF); response chart;
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Times Cited By KSCI : 1  (Citation Analysis)
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