Stability of Cracked Fluid-Conveying Pipeline on Elastic Foundation under Distributed Follower Forces

Publisher: Trans Tech Publications

E-ISSN: 1662-8985|2014|1065|2076-2079

ISSN: 1022-6680

Source: Advanced Materials Research, Vol.2014, Iss.1065, 2015-01, pp. : 2076-2079

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Abstract

The differential equation of fluid-conveying pipes considering distributed follower force and elastic foundation is established. The equation is discreted and solved by Galerkin method and the frequency characteristic values are solved by bending moment transfer method. The effects of crack location and elastic foundation stiffness to the form of instability of the pipes under the distributed follower force are analyzed. Results show that the elastic foundation stiffness can enforce the stability of the pipes effectively, and the effects are more obvious when the crack location is closer to the middle of the pipe.