Modeling fatique behavior of dents in petroleum pipelines /
and pipe wall thickness. Larger dents in terms of surface
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1997.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | and pipe wall thickness. Larger dents in terms of surface and pipes. Dents reduce in size, or rebound, with removal of and stress behavior of dents were investigated. The area of the dented region experience more rebound than characteristics can be predicted for a broad range of values characteristics of dents. Stress data were studied to contact region, but can have failures away from the contact criteria of dents are currently only based on dent depth. To dent. Shorter dents are not susceptible to failures in the Dents in pipelines can seriously reduce the design life of a depth, dent type, dent restraint, pipe diameter, thickness, determine failure modes of different combinations of dents develop better acceptance criteria of dents to improve the displacement data were studied to understand the rebound element parametric study was performed. Three dimensional failure of a dent is influenced by a variety of parameters. fatigue failures. Two different modes of failure were found fatigue lives as compared to longer dents. The mode of for the various parameters. The study of the distribution of grade, longitudinal stress, pipe support, and pressure at indentation. For the given parameters, the rebound behavior make dents susceptible to fatigue failures. Acceptance modeling dents in pipelines. Parameters modeled include dent of dents is studied using rebound and stress behavior to pipeline. Dents cause stress concentrations to develop which rebound is influenced by several parameters such as dent type region in the dent periphery. Shorter dents have higher reliability of dents in pipelines. shell element models were given elasto-plastic behavior for smaller dents. Thinner pipes experience more rebound than stresses in dented regions shows locations of possible susceptible to fatigue failures in the contact region of the the force at indentation and pressurization. The amount of The influence of various parameters of the fatigue strength thicker pipes. From the finite element modeling, the rebound to exist. Longer dents in terms of dent length are understand the behavior of dents in pipelines, a finite |
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| Item Description: | "Major subject: Civil Engineering". Vita. |
| Physical Description: | xx, 248 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |