• Title/Summary/Keyword: 복합신소재구조물

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Evaluation of Impact Damage Behavior of a Reinforced Concrete Wall Strengthened with Advanced Composite Materials (복합신소재로 보강된 철근 콘크리트 구조물의 충돌손상거동 평가)

  • Noh, Myung-Hyun;Lee, Sang-Youl
    • Journal of the Korean Society for Advanced Composite Structures
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    • v.1 no.3
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    • pp.41-48
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    • 2010

  • In this paper, the analysis of impact damage behavior of a reinforced concrete structure that undergoes both a shock impulsive loading and an impact loading due to the air blast induced from an explosion is performed. Firstly, a pair of multiple loadings are selected from the scenario that an imaginary explosion accident is assumed. The RC structures strengthened with advanced composite materials (ACM) are considered as a scheme for retrofitting RC wall structures subjected to multiple explosive loadings and then the evaluation of the resistant performance against them is presented in comparison with the result of the evaluation of a RC structure without a retrofit. Also, in order to derive the result of the analysis similar to that of real explosion experiments, which require the vast investment and expense for facilities, the constitutive equation and the equation of state (EOS) which can describe the real impact and shock phenomena accurately are included with them. In addition, the numerical simulations of two concrete structures are achieved using AUTODYN-3D, an explicit analysis program, in order to prove the retrofit performance of a ACM-strengthened RC wall structure.

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The Effect of the Aspect Ratio on the Natural Frequency of the Advanced Composite Structures (복합신소재 구조물의 형상비에 따른 고유진동수의 영향)

  • Kim, Yun Young;Han, Bong Koo
    • Journal of the Korean Society for Advanced Composite Structures
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    • v.5 no.4
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    • pp.18-23
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    • 2014

  • In this paper. the effects of the aspect ratio on the natural frequency of the advanced composite road structures is studied. The advanced composite structures are too difficult for such design engineers for construction and some simple but accurate enough methods are necessary. Some laminate orientations have decreasing values of $D_{16}$, $B_{16}$, $D_{26}$ and $B_{26}$ stiffnesses as the ply number increases. The plate aspect ratio considered is from 1 to 5. Most of the road structures have large aspect ratios, for such cases further simplification is possible by neglecting the effect of the longitudinal moment terms.

  • https://doi.org/10.11004/kosacs.2014.5.4.018 인용 PDF KSCI