Analysis on a Cast-Iron Pipe Applied to Protection of Underwater Cable
International Journal of Materials Science and Applications
Volume 5, Issue 3, May 2016, Pages: 119-124
Received: May 16, 2016; Published: May 19, 2016
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Author
Hsien Hua Lee, Department of Marine Environment and Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan
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Abstract
In this study, a protection-pipe system is developed for the protection of undersea electricity power cable laid along shoreline with medium deep water. The protection-pipes are made from ductile cast-iron alloys while the dimensions are designed corresponding to the diameter of balk electricity power cables. In order to know if the protection-pipe is strong enough to prevent the power cable from damages caused unnaturally, such as berthing anchoring from large size ships or towing operation from fishing boats, both analytical and experimental studies were carried out. Presented in this paper is an analytical study based on the material mechanics. A finite element analytical method was applied and the deformed shapes on the protection-pipe were studied. Along with the deformation, the corresponding stresses were also presented. In order to know the response of the protection-pipe subjected to an impact loading exerting on various parts of the pipe, several analysis for various loadings and boundary conditions were performed. It was found from the results of the analysis that the proposed protection-pipes are able to meet the requirements of TPC set for the electricity power cable laid under seawater.
Keywords
Ductile Cast Iron, Structural Safety, Protection Pipe, Undersea Pipeline, Finite Element Analysis
To cite this article
Hsien Hua Lee, Analysis on a Cast-Iron Pipe Applied to Protection of Underwater Cable, International Journal of Materials Science and Applications. Vol. 5, No. 3, 2016, pp. 119-124. doi: 10.11648/j.ijmsa.20160503.11
References
[1]
V. Sundar and, K. Subbiah, Studies on Wave Subsea Pipeline Interaction, Ocean Engineering, Vol. 11, No. 6, 1984, pp. 655-662.
[2]
K. F. Lambrakos, Marine Pipeline Soil Friction Coefficients From In-situ Testing, Ocean Engineering, Vol. 12, No. 2, 1985, pp. 131-150.
[3]
M. Zimmerman, Dynamic Behavior of Deep-Ocean pipeline, Journal of Waterway, Port, Coastal and Ocean Engineering, Vol. 112, 1986, pp. 183-199.
[4]
Y. Friedmann, Sea-bottom Forces Crucial in Pipeline Crossings Design, Oil and Gas Journal Vol. 86, 1988, pp. 47-50.
[5]
B. C. Shah, C. N. White and I. J. Rippon, Design and Operational Considerations For Unsupported Offshore Pipeline Spans, SPE Production Engineering, Vol. 3, 1988, pp. 227-237.
[6]
F. Raichlen and A. Watanabe, Wave Induced Forces on A Submarine Pipeline, Proceedings of the 7th International Offshore and Polar Engineering Conference, 1997, pp. 261-268. G.
[7]
B. L. Joseton, U. Stogh and H. E. Hjelm, A Nonlinear Kinematic Hardening Model for Elastoplastic Deformations in Grey Cast Iron, J. of Engineering Materials and Technology, ASME, 1995, Vol. 117, pp. 145-150.
[8]
W. Baer, A. Eberle, and D. Klingbeil, The Impact Of Ductile Cast Iron Fracture Behaviour On Dynamic Fracture Mechanics R-Curve Testing Using Key Curve Methods, Technical report, 2012, BAM Federal Institute for Materials Research and Testing, Germany.
[9]
M. W. Schwartz, Recommendations for Ductile and Brittle Failure Design Criteria for Ductile Cast Iron Spent-Fuel Shipping Containers, Technical Reports, 1984, Lawrence Livermore National Laboratory, CA, USA.
[10]
H. H. Lee, Performance of a Covering Pipe for the Protection of Underwater Cable Subjected to On- site Impact Loadings, Applied Mechanics and Materials, Vol. 82, 2011, pp. 810-815.
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