Design Optimization of Safety Barrier Consisting of Steel Rail and CFRP Post

Kim, Jung J.; Kim, Seung-Eock

doi:10.11004/kosacs.2013.4.2.025

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…For practical modeling, it is worth considering the material behavior under the strain loading rate [15][16][17][18]. Because deterministic explosion simulation cannot provide a powerful design, given the considerable sensitivity of explosion simulation to many unclear parameters controlling the explosion [19], a reliability-based approach for designing explosion-proof composites has been suggested [20][21][22][23]. The literature review showed the tremendous application of CFRP on strengthening old structures as well as independent members for resisting explosive impact.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Explosion-Resistant System Consisting of Steel Slab and CFRP Frame

Kim¹

2021

Materials

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This study presents an explosion-resistant hybrid system containing a steel slab and a carbon fiber-reinforced polymer (CFRP) frame. CFRP, which is a high-strength material, acts as an impact reflection part. Steel slab, which is a high-ductility material, plays a role as an impact energy absorption part. Based on the elastoplastic behavior of steel, a numerical model is proposed to simulate the dynamic responses of the hybrid system under the air pressure from an explosion. Based on this, a case study is conducted to analyze and identify the optimal design of the proposed hybrid system, which is subjected to an impact load condition. The observations from the case study show the optimal thicknesses of 8.2 and 7 mm for a steel slab and a ϕ100 mm CFRP pipe for the hybrid system, respectively. In addition, the ability of the proposed hybrid system to resist an uncertain explosion is demonstrated in the case study based on the reliability methodology.

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Section: Introductionmentioning

confidence: 99%

Design Optimization of Explosion-Resistant System Consisting of Steel Slab and CFRP Frame

Kim¹

2021

Materials

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Composite Action in Masonry Columns Due to Damage and Creep Interaction

Kim¹

2014

Journal of the Korean Society for Advanced Composite Structures

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Since the collapse of historical masonry structures in Europe in the late 1990's, the interests in understanding the long-term effect of masonry under sustained compressive stresses have increased. That requires combining the significance of time-dependent effects of creep with the effect of damage due to overstress to realize the evolution of cracks and then failure in masonry. Meanwhile, composite analysis of masonry columns was proven effective for realizing ultimate strength capacity of masonry column. In this study, a simplified mechanical model with step-by-step in time analysis was proposed to incorporate the interaction of damage and creep to estimate the maximum stress occurred in masonry. It was examined that the interaction of creep and damage in masonry can accelerate the failure of masonry.

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