Wu Ying
School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, China
Qiu Cheng-zhi
School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, China
Mo Yu
School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, China
Liu Wu
School of Petroleum Engineering, Southwest Petroleum University, Chengdu, China
ABSTRACT
Dent, which is one of the important factors affecting pipeline fatigue life, substantially reduces the fatigue life of the pipeline in service. Meanwhile, the dent displacement will be changed with the operation pressure fluctuations of the in-service pipeline, resulting in a circular bending stress, which directly affect the pipeline fatigue life. Finite element models of typical lateral and axial dent were established under different circumstances. On the basis of considerable calculations, the results were subjected to univariate and multivariate analyses, yielding the dependences of displacement on different parameters. The calculation results were fitted by non-linear regression. The relationships between the maximum displacement of two kinds of typical dented pipeline and the dent depth, diameter and thickness of pipeline and the dent longitudinal length were acquired by establishing mathematical models. And the characteristics of the displacement variation and mathematical model of typical lateral and axial dent were obtained.
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How to cite this article
Wu Ying, Qiu Cheng-zhi, Mo Yu and Liu Wu, 2013. Displacement Analysis and Comparison of Lateral and Axial Typical Dent on Pipeline Based on FE Calculation. Information Technology Journal, 12: 8212-8219.
DOI: 10.3923/itj.2013.8212.8219
URL: https://scialert.net/abstract/?doi=itj.2013.8212.8219
DOI: 10.3923/itj.2013.8212.8219
URL: https://scialert.net/abstract/?doi=itj.2013.8212.8219
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