This paper is devoted to stability investigation of orthotropic circular cylindrical vessels subjected to external pressure. An untypical orthotropic structure that consist of two layers: smooth-external and corrugated-internal is proposed. The investigation is divided into two steps. In first one analytical formulas describing buckling behaviour are derived. In second step numerical analysis is performed by using FEM to obtain the correlation between analytical and numerical results. Authors also considered linear and nonlinear buckling analysis. During the linear analysis the influence of vessel geometry on critical pressure is determined. Nonlinear analysis is carried out to create equilibrium paths which show the behaviour of vessels in post-buckling state. The results of the analysis are presented in figures.

Volume Subject Area:
Design and Analysis
Keywords:
Orthotropic vessel, Horizontal vessel, Stability analysis, Buckling, FEM analysis
Topics:
Buckling, Finite element methods, Finite element model, Stability, Vessels
This content is only available via PDF.
Copyright © 2010
 by ASME
You do not currently have access to this content.