Study on Efficient Time Domain Fatigue Analysis of Mooring Chain by Representative Mean Position
| Autor: | Jeong-Hwan Kim, Yooil Kim, Jeongmoon Park |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
business.industry
lcsh:Ocean engineering 020101 civil engineering 02 engineering and technology Structural engineering Mooring 01 natural sciences Offset 010305 fluids & plasmas 0201 civil engineering Representative mean position 0103 physical sciences lcsh:TC1501-1800 Fatigue damage De-coupled analysis Time domain business Mooring line Geology |
| Zdroj: | 한국해양공학회지, Vol 32, Iss 5, Pp 333-340 (2018) |
| ISSN: | 2287-6715 1225-0767 |
| Popis: | This paper addresses the concept of the representative mean position, which was devised to improve the numerical efficiency of a time domain fatigue analysis of a mooring chain. To investigate the influence of an artificial offset of the floater on the fatigue of the mooring chain, a parametric study was performed on the moored FPSO under various combinations of offsets and environmental conditions. Tension time histories were calculated using the de-coupled analysis method, and fatigue damages were calculated to determine the influence of the offset. The parametric study was extended to a more realistic case to determine the actual effect of the representative mean position, where a comparison was made between the two different analysis results, one using the representative mean position and the other one using the actual mean position. It was confirmed that the application of the representative mean position guaranteed the conservatism of the fatigue damage with the enhanced numerical efficiency in the time domain fatigue analysis. |
| Databáze: | OpenAIRE |
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