Abstract
Paper presents the analytical solution of the stress-strain state for a dented pipeline, based on the method of equivalent loads. First off all solution for a harmonic imperfection is found, then using Fourier series expansion a semi-analytical procedure is proposed to assess single dent. Comparison between analytical and numerical results for the axial force and pressure load is given. Influence of the dent dimensions, shell radius to thickness ratio and initial loading to stress concentration factor are discussed.
Highlights
T runk pipelines are one of the most common means used in the transportation of various kinds of energy resources
The second stress field results from applying to the perfect version of the shell a load pattern that results in perturbation stress behavior equivalent to that which would be induced by the geometric imperfection
It should be noted that the equivalent load does not produce the correct dent shape but instead produce a stress field that is similar to that which would have been produced by the dent
Summary
T runk pipelines are one of the most common means used in the transportation of various kinds of energy resources. The main idea of a current study is to develop effective semi-analytical procedure for dent analysis based on equivalent loads method with second order terms to perform the convergency analysis and to investigate the dent shape effect and loading level on the stress concentrator factor.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
