On the geometry design of the stiffened pipe structure: A finite element model

The stiffened pipe collapse problem and the buckling propagation problem are both solved. The numerical results are compared and verified with ANSYS. It is observed that the stiffness can be largely increased by using stiffeners on pipes. The number of DOF is also compared between the proposed method and ANSYS. The post buckling profile of the stiffened pipe is obtained. The maximum and minimum buckling propagation pressure are calculated. The design based on buckling collapse and buckling propagation are discussed.