期刊
ACTA ASTRONAUTICA
卷 145, 期 -, 页码 268-274出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actaastro.2018.01.064
关键词
Carbon fibers; hierarchical orthogrid stiffened cylinder; Mechanical properties; Mechanical testing; Filament winding
资金
- National Natural Science Foundation of China [11672130, 11372095]
- Key Laboratory of Mechanics and Control of Mechanical Structures [MCMS-0217G03]
- Aerospace System Engineering Shanghai and China Academy of Launch Vehicle Technology
To get strong, stiff and light cylindrical shell, carbon fiber reinforced hierarchical orthogrid stiffened cylinders are designed and fabricated. The cylinder is stiffened by two-scale orthogrid. The primary orthogrid has thick and high ribs and contains several sub-orthogrid cells whose rib is much thinner and lower. The primary orthogrid stiffens the bending rigidity of the cylinder to resist the global instability while the sub-orthogrid stiffens the bending rigidity of the skin enclosed by the primary orthogrid to resist local buckling. The cylinder is fabricated by filament winding method based on a silicone rubber mandrel with hierarchical grooves. Axial compression tests are performed to reveal the failure modes. With hierarchical stiffeners, the cylinder fails at skin fracture and has high specific strength. The cylinder will fail at end crushing if the end of the cylinder is not thickened. Global instability and local buckling are well restricted by the hierarchical stiffeners.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据