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| Vortex-induced vibration fatigue characteristic of deepwater aluminum alloy riser |
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SUN You-yi, CHEN Guo-ming, CHANG Yuan-jiang
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(College of Mechanical and Electronic Engineering in China University of Petroleum，Dongying 257061,Shandong Province，China )
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| Abstract: |
| Aluminum alloy riser (AAR) has high specific strength, which can withstand the rigors of the offshore environment while reducing weight. The vortex-induced vibration ( VIV) is the main cause of yield failure and fatigue failure for risers.Riser VIV response was predicted based on a mode superposition method. VIV response and fatigue characteristics of AAR subjected to different current profiles were systematically investigated through large amounts of VIV analysis.VIV fatigue |
| Key words: deepwater aluminum alloy riser vortex-induced vibration( VIV) VIV analysis fatigue damage |
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