In this study, composite laminate cantilever type cylindrical shells with edge-stiffeners are analyzed. A versatile 4-node flat shell element which is useful for the analysis of 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. Two models by load conditions are considered. Load type A and B are loaded by point load at the free edge and line load respectively. A various parameter examples are presented to obtain proper stiffened length and stiffened thickness of edge-stiffeners. It is shown that the thickness of shell can be reduced minimum 30% by appropriate edge-stiffeners.

• 손병직(건양대학교 건설환경공학과 부교수) | Son, Byung-Jik Corresponding author
• 지효선(대원대학 철도건설과 부교수) | Ji, Hyo-Seon
• 장석윤(서울시립대학교 토목공학과 명예교수, (주)이산 상임고문) | Chang, Suk-Yoon