Simulation for Composite Cylindrical Pressure Hull using Progressive Response Surface Method

Abstract

Response surface method (RSM) as a fitting method had been applied to composite cylindrical buckling problem. There are little researches focusing on the accuracy of the RSM. For most cylinder buckling problems, only angles of the fiber orientation had been considered as the important variables. This paper proposes a progressive response surface method (RSM) to approximate the buckling critical pressure for composite cylindrical pressure hull taking ply angles and ply thicknesses into account. This method is adopted to replace the finite element method (FEM) to rise the calculation efficiency, and the fitting model result in this method can be proved to be effective and accurate compared with 6 different RSM models. The results can demonstrate its accuracy and feasibility under ply angles and thicknesses for composite cylindrical buckling problem.