논문 상세보기
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°)4]s and [(0°/90°)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. This study will contribute to the future study for evaluating the design strength and optimum design of U-rib stiffened plates.
1. 서 론
2. 유사거동모형 수립
2.1 탄성스프링 구속패널 모형
2.2 에너지 평형방정식 수립
2.3 유효스프링강성 수식화 및 좌굴강도공식 유도
3. 유한요소해석
3.1 단면제원
3.2 유한요소 모델링
4. 결언
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