A Study on the Ring Effects of Composite Laminated Conical Shells

복합적층 원뿔형 쉘의 링 보강효과 연구

  • Park, Weon-Tae (Department of Civil Engineering, Cheonan National Technical College) ;
  • Choi, Jae-Jin (Department of Civil Engineering, Cheonan National Technical College) ;
  • Son, Byung-Jik (Department of Civil Engineering, University of Seoul)
  • 박원태 (천안공업대학 토목과) ;
  • 최재진 (천안공업대학 토목과) ;
  • 손병직 (서울시립대학교 토목공학과)
  • Published : 2004.03.01

Abstract

In this study, composite laminated conical shells with ring stiffeners are analyzed. A versatile 4-node shell element which is useful for the analysis of conical shell structures is used. An improved flat shell element is established by the combined use of the addition of non-conforming displacement modes and the substitute shear strain fields. The proposed element has six degrees of freedom per node and permits an easy connection to other types(beam element) of Optimum location and optimum section properties of ring stiffeners are obtained. It is shown that the thickness of conical shell is reduced about 20% by optimum ring stiffeners.

Keywords

composite laminated;conical shells;ring stiffeners;improved flat shell element

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