WIT Press


Longitudinal Buckling Of Slender Pressurised Tubes

Price

Free (open access)

Paper DOI

10.2495/FSI130121

Volume

129

Pages

12

Page Range

133 - 144

Published

2013

Size

115 kb

Author(s)

S. Syngellakis

Abstract

This paper is concerned with Euler buckling of long slender tubes subjected to internal pressure. A small disturbance from its perfectly straight form is imposed to the tube to account for the effect of the non-conservative, follower forces generated by fluid pressure. An equivalent lateral distributed force is derived by considering the geometric changes arising from the flexural deformation of the tube. A new differential equation governing the buckling mode of the tube considered as a column is obtained. This equation includes the inertia term for investigating buckling through the dynamic stability criterion. The theory is applied to several cases of pressurised tubes under various loadings and support conditions. The results show that internal fluid pressure can have a significant load transfer role that may lead to buckling in certain cases but has no apparent effect in others. Keywords: cylindrical tubes, internal fluid pressure, Euler buckling.

Keywords

cylindrical tubes, internal fluid pressure, Euler buckling.