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http://dx.doi.org/10.5916/jkosme.2015.39.8.821

Component structural analysis on 15kW class wave energy converter  

Singh, Patrick Mark (Graduate School, Department of Mechanical Engineering, Mokpo National University)
Chen, Zhenmu (Graduate School, Department of Mechanical Engineering, Mokpo National University)
Choi, Young-Do (Department of Mechanical Engineering, Institute of New and Renewable Energy Technology Research)
Abstract
This study concentrates on a wave energy converter with floaters that extracts the ocean's energy by moving up and down with the wave motion. The floater is connected to an arm structure, including a hydraulic cylinder that drives a hydraulic generator. This study focuses on a structural analysis of the floater unit, including arm and cylinder components, platform and jack-up system, along with spud columns. Previous studies have been conducted for miniature models for experimentation, but this study focuses on the full-scale model structural analysis. Static structural analysis is conducted using fine numerical grids. Due to the complexity of the whole model, it is analyzed in separate pieces. The floater unit, with arm and cylinder, are combined into one system. The platform is analyzed separately as a single system. There are four jack-up systems for each spud column; only one jack-up system is analyzed, as uniform loads are assumed on each system. There are several load cases for each system, all of which are analyzed thoroughly for stress (von Mises, shear, and normal) and deformation. Acceptable results were obtained for most of the components; unsafe components were redesigned.
Keywords
Wave energy converter; Component; Stress; Deformation; Structure analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 L. Creel, "Ripple effects: Population and coastal regions," Population Reference Bureau, vol. 12, no. 4, pp. 500, 2003.
2 B. Drew, "A review of wave-energy converter technology," Journal of Power and Energy, vol. 223, 2009.
3 A. B. Melo, "Ocean energy - state of the art," Wave Energy Centre, 2009.
4 J. P. Koefoed, P. Frigaard, and M. Kramer, "Recent developments of wave energy utilization in Denmark," Proceedings of the Workshop on Renewable Ocean Energy Utilization at 20th Annual Conference, Korean Society of Ocean Engineers, 2006.
5 J. S. Oh, T. Komatsu, and Y. H. Kim, "Theoretical analysis of wave energy converter," Journal of the Korean Society of Marine Engineering, vol. 32, no. 1, pp. 169-174, 2008.   DOI   ScienceOn
6 K. Hadano, S. B. Lee, and B. Y. Moon, "Dynamics model of the float-type wave energy converter considering tension force of the float cable," Journal of the Korean Society of Marine Engineering, vol. 38, no. 2, pp. 217-224, 2014.   DOI   ScienceOn
7 ANSYS Inc., "ANSYS Mechanical Documentation," Ver. 13, http://www.ansys.com, Accessed November 10, 2013.