Non-linear Analysis of Isogrid Cylinder
Isogrid structure is the reinforced structures to improve buckling load of structures. It is a reinforced structure using a lattice of intersecting ribs forming an array of equilateral triangles. It has advantages for complex load cases. In this paper, non-linear analysis and structural test of aluminum isogrid structure are described. Diameter of the cylinder is 2. 4 m and height is about 1.5 m. MSC/ MARC is used for non-linear FE analysis. About 40000 shell elements are used for FE analysis. Stiffness and buckling load for cylinder are obtained by FE analysis. In structural test, we find buckling load and buckling mode shape. Local buckling is also observed in triangular grid but compressive stiffness of cylinder is not affected by local buckling. Finally, results of analysis are compared with those of test.
Isogrid Buckling Analysis Non-linear Analysis
Joon-Tae Yoo Young-Soon Jang Yeong-Moo Yi
Structures & Materials Department,Korea Aerospace Research Institute 45 Eoeun-Dong Yusung-Gu Daejeon,South Korea
国际会议
The 11th International Space Conference of Pacific-basin Societies(第11届环太平洋国际航天会议)
北京
英文
514-519
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）