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Compression limit state of HVAC submarine cables |
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| Affiliation: | 1. Qatar Petroleum, Doha, Qatar;2. Department of Mechanical Engineering, Curtin University, WA, Perth, Australia;3. School of Engineering and Information Technology, Federation University Australia, VIC, Australia;1. Department of Mechanical Engineering, Curtin University, WA, Perth, Australia;2. School of Science, Engineering and Information Technology, Federation University, Australia;1. CEMPS – College of Engineering, Mathematics and Physical Science, Renewable Energy Research Group, University of Exeter, Penryn Campus, Treliever Rd, Penryn TR10 9FE, UK;2. CPNL Engineering GmbH, Frohland 4, 49773 Haren (Ems), Germany;3. Norddeutsche Seekabelwerke (NSW) GmbH, Kabelstrasse 9-11, 26954 Nordenham, P.O. Box 14 64, Germany;1. Institute of Marine Machinery, College of Mechanical and Electrical, Engineering Harbin Engineering University, No. 145 Nantong Street, Harbin, 150001, China;2. State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, No. 2 Linggong Road, Dalian, 116023, China |
| Abstract: | An industry accepted standard does not currently exist for determination of compression limits in a subsea cable. This has resulted in most manufacturers specifying that subsea cables are not permitted to be axially loaded in compression.Additionally industry guidance does not exist regarding the consequences of inducing compression forces within subsea cables and the resulting effect on cable integrity. Industry recommended practice and guidance also does not have any information regarding experimental test arrangements to determine allowable compression levels within a subsea cable. This lack of modelling/testing guidance along with manufacturer recommendations of zero compressive loads within subsea cables results in overly conservative and restrictive design parameters for subsea cable installation and use.Due to the complex interaction within a subsea cable structure, such as contact interaction and friction between cable strands, theoretical modelling has been unable to provide reliable stress predictions and therefore an experimental testing regime is required if compression limits within the cable are to be appropriately determined. This paper describes combined axial and bending test arrangements that can be used as a guideline for determination of allowable compression limits for subsea cables. |
| Keywords: | Submarine cable HVAC Submarine cable installation Crossing design Allowable axial compression Cable bending Recommended test Renewable energy |
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