This study is about the basic design technology to radically increase the structural stability of structural shell or tube, which are utilized in a variety of large structures like aircrafts, plant, bridges and buildings. Recent studies have revealed that the plates stiffened by closed-sections ribs can be designed to have greater strength as well as the reduction of used number of stiffeners. Then, the analytical models were selected based on the huge steel tube design and the finite element modeling has been conducted using the ABAQUS. Through this study, the elastic buckling strengths are compared with the flat plate buckling stress and the improved effect in the local buckling strength due to the closed-section ribs are numerically verified.

ABSTRACT
 1. 서 론
 2. 이론적 배경
 3. 유한요소모델링
 4. 해석결과
 5. 결론
 References

• 최병호(한밭대학교 건설환경공학과) | Choi Byung-Ho
• Arriane Nicole P. Andico(한밭대학교 건설환경공학과)
• 김정원(한밭대학교 건설환경공학과) | Kim Jung-Won