Buckling of a cylindrical hose under a uniformly distributed axial load

The purpose of this project is to develop a method of analyzing the behavior of a cylindrical hose loaded axially by hydrodynamic drag forces. The hose is the outer jacket of a towed array module and is prevented from elongating axially by an internal strength member. The goal of this project is to develop the capability to characterize the structural behavior of the hose and determine the critical loads for the hose as a function of length, diameter, wall thickness, and material properties. A major concern is whether compression in the aft end of the hose will cause instability (buckling) of the hose. Closed form type equations of the membrane and buckling behavior for an axisymmetric cylindrical shell are developed and implemented with computer programs. The solution results are then checked using Finite Element Analysis (FEA) models.