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Stress analyses of wrinkle bends in pipelines
AbstractWrinkle bends are made by developing local outwards-directed folds at the intrados. The stresses can arise from any combination of internal pressure and change of angle, the latter often arising from thermal effects. Although wrinkle bends are not commonly used in large pipelines nowadays, there are many in existing pipelines built years ago. The paper shows that the stresses are mainly due to local bending of the pipe wall and have peak values which can be quite large especially on the inside surface of the highest point of the wrinkle. Graphs which enable these stresses to be evaluated separately for internal pressure and for longitudinal displacement (or thermal loading) are provided.
Stress analyses of wrinkle bends in pipelines
AbstractWrinkle bends are made by developing local outwards-directed folds at the intrados. The stresses can arise from any combination of internal pressure and change of angle, the latter often arising from thermal effects. Although wrinkle bends are not commonly used in large pipelines nowadays, there are many in existing pipelines built years ago. The paper shows that the stresses are mainly due to local bending of the pipe wall and have peak values which can be quite large especially on the inside surface of the highest point of the wrinkle. Graphs which enable these stresses to be evaluated separately for internal pressure and for longitudinal displacement (or thermal loading) are provided.
Stress analyses of wrinkle bends in pipelines
Murray, N.W. (author)
Thin-Walled Structures ; 17 ; 65-80
1992-10-14
16 pages
Article (Journal)
Electronic Resource
English
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