Journal of the Korean Society for Advanced Composite Structures (복합신소재구조학회 논문집)

Korean Society for Advanced Composite Structures (한국복합신소재구조학회)
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Increasing Effect in Local Buckling Strength of Laminated Composite Plates Stiffened with Closed-section Ribs under Uniaxial Compression

폐단면리브로 보강된 일축압축을 받는 복합적층판의 국부좌굴강도 증가효과

  • Hwang, Su-Hee (Department of Civil and Environmental Engineering, Hanbat National University) ;
  • Kim, Yu-Sik (Department of Civil and Environmental Engineering, Hanbat National University) ;
  • Choi, Byung-Ho (Department of Civil and Environmental Engineering, Hanbat National University)
  • 황수희 (국립한밭대학교 건설환경공학과) ;
  • 김유식 (국립한밭대학교 건설환경공학과) ;
  • 최병호 (국립한밭대학교 건설환경공학과)
  • Received : 2013.04.19
  • Accepted : 2013.05.31
  • Published : 2013.06.30
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Abstract

This study is aimed to examine the influence of the rotational stiffness of U-shaped ribs on the local buckling behaviors of laminated composite plates. Applying the orthotropic plates with eight layers of the layup $[(0^{\circ})4]s$ and $[(0^{\circ}/90^{\circ})2]s$, 3-dimensional finite element models for the U-rib stiffened plates were setup by using ABAQUS and then a series of eigenvalue analyses were conducted. There is a need to develope a simple design equation to establish the rotational stiffness effect, which could be easily quantified by comparing the theoretical critical stress equation for laminated composite plates with elastic restraints based on the Classical laminated plate theory. Through the parametric numerical studies, it is confirmed that there should clearly exist an increasing effect of local plate buckling strength due to the rotational stiffness by closed-section ribs. An applicable coefficient for practical design should be verified and proposed for future study. This study will contribute to the future study for establishing an increasing coefficient for the design strength and optimum design of U-rib stiffened plates.

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References

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  1. 면내 압축을 받는 폐단면리브로 보강된 곡판의 곡률에 따른 국부좌굴 거동 특성 vol.16, pp.4, 2013, https://doi.org/10.9798/kosham.2016.16.4.1