TY - GEN
T1 - Effect of initial imperfection on the global buckling of submarine pipelines with different length
AU - Liu, Run
AU - Li, Chengfeng
AU - Wu, Xinli
N1 - Funding Information:
The authors are grateful for the support provided by the National Key Basic Research Program of China (973 Program) (Grant nos. 2014CB046802), the National Natural Science Foundation of China (Grant nos. 51679162), and the Natural Science Foundation of Tianjin (Grant nos. 17JCZDJC39900).
Publisher Copyright:
Copyright © 2018 by the International Society of Offshore and Polar Engineers (ISOPE)
PY - 2018
Y1 - 2018
N2 - The effect of initial imperfections on the pipeline global buckling is the theoretical basis of the global buckling stability analysis and buckling control of the submarine pipeline. The pipeline length for the analysis has a significant effect on the global buckling. According to the global buckling regularity of pipelines with different length, pipelines are divided into two types: the “long pipeline” and the “short pipeline”. The global buckling of pipelines with different initial imperfections is simulated by the 3D-Explicit method. The effect of an initial imperfection on the global buckling of a “long pipeline” and a “short pipeline” are proposed by analyzing the effect of initial imperfections on the expansion length of buckling. The global buckling of a long pipeline and a short pipeline with the same initial imperfection are compared. It shows that the post-buckling characteristic values, including moment, strain and lateral displacement, of the long pipeline are larger than those of the short pipeline. It shows that the long pipeline with an initial imperfection is more prone to destructive global buckling than the short pipeline with the same initial imperfection.
AB - The effect of initial imperfections on the pipeline global buckling is the theoretical basis of the global buckling stability analysis and buckling control of the submarine pipeline. The pipeline length for the analysis has a significant effect on the global buckling. According to the global buckling regularity of pipelines with different length, pipelines are divided into two types: the “long pipeline” and the “short pipeline”. The global buckling of pipelines with different initial imperfections is simulated by the 3D-Explicit method. The effect of an initial imperfection on the global buckling of a “long pipeline” and a “short pipeline” are proposed by analyzing the effect of initial imperfections on the expansion length of buckling. The global buckling of a long pipeline and a short pipeline with the same initial imperfection are compared. It shows that the post-buckling characteristic values, including moment, strain and lateral displacement, of the long pipeline are larger than those of the short pipeline. It shows that the long pipeline with an initial imperfection is more prone to destructive global buckling than the short pipeline with the same initial imperfection.
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M3 - Conference contribution
AN - SCOPUS:85053449464
SN - 9781880653876
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 201
EP - 206
BT - Proceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018
PB - International Society of Offshore and Polar Engineers
T2 - 28th International Ocean and Polar Engineering Conference, ISOPE 2018
Y2 - 10 June 2018 through 15 June 2018
ER -