There are many methods to reinforce the cylindrical structure for light weight design. Isogrid is one of the reinforced structures to improve buckling load. To make Isogrid panel, trigngle shape grid is removed by mechanical milling and it is curved-s...
There are many methods to reinforce the cylindrical structure for light weight design. Isogrid is one of the reinforced structures to improve buckling load. To make Isogrid panel, trigngle shape grid is removed by mechanical milling and it is curved-shaped by roll bending which is one of the plastic forming. When the Isogrid panel is shaped by roll bending, initial geometrical imperfection is occurred and becomes the reason which diminish the buckling load. In this paper, ANSYS is used for non-linear FE analysis and analysis results are compare with manufactured Isogrid panel about dimension of initial geometrical imperfection.