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A comparative study on the fatigue life of mooring systems for a Wave Dragon (WEC)

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Year: 2015
COI code: OICIRAN06_038
Paper Language: English

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Authors A comparative study on the fatigue life of mooring systems for a Wave Dragon (WEC)

  Esmaeil Shafizadeh - Faculty Member ,Chabahar Maritime University, IRAN;
  Ataollah Gharechahi - Faculty Member ,Chabahar Maritime University, IRAN;


In this paper, two different types of the mooring system for a wave dragon which is assumed to be installed in south coast waters of Chabahar, Iran are compared. One system consists of one mooring lines and another one consists of two mooring lines. It is considered that the total mass of two systems is the same. The two mooring systems are analyzed from the viewpoint of the fatigue life.The significant wave height of Chabahar for 30 year return period is used. Mooring tension process is obtained from time-domain motion analysis using ANSYS/AQWA, while the rain flow method is used to count the cycle of load and the Miner‟s rule implemented for calculation of fatigue life. The results show that the however the maximum tension on single point mooring is slightly different from the two line mooring system but the fatigue life of single point mooring is about twice bigger than the two line mooring system.


Fatigue, Mooring Chain, Wave Load

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COI code: OICIRAN06_038

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Shafizadeh, Esmaeil & Ataollah Gharechahi, 2015, A comparative study on the fatigue life of mooring systems for a Wave Dragon (WEC), 6TH International Conference on Offshore Industries, تهران, انجمن مهندسي دريايي ايران, the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Shafizadeh, Esmaeil & Ataollah Gharechahi, 2015)
Second and more: (Shafizadeh & Gharechahi, 2015)
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The University/Research Center Information:
Type: state university
Paper No.: 886
in University Ranking and Scientometrics the Iranian universities and research centers are evaluated based on scientific papers.

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