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http://dx.doi.org/10.7234/composres.2013.26.4.207

Thickness Optimization for Spar Cap of Composite Tidal Current Turbine Blade using SQP Method  

Cha, Myung-Chan (한국과학기술원 기계항공시스템공학부 항공우주공학전공 대학원)
Kim, Sang-Woo (한국과학기술원 기계항공시스템공학부 항공우주공학전공 대학원)
Jeong, Min-Soo (한국과학기술원 기계항공시스템공학부 항공우주공학전공 대학원)
Lee, In (한국과학기술원 기계항공시스템공학부 항공우주공학전공)
Yoo, Seung-Jae (현대중공업 주식회사)
Park, Cheon-Jin (현대중공업 주식회사)
Publication Information
Composites Research / v.26, no.4, 2013 , pp. 207-212 More about this Journal
Abstract
In this study, the thickness optimization for uni-directional (UD) glass fiber reinforced polymer (GFRP) laminates of the spar cap of composite tidal blades was performed under the tip deflection constrains. The spar cap was composed of GFRP composites and carbon fiber reinforced polymer (CFRP) composites. The stress distributions in the blade as well as its material costs for the optimized results were additionally investigated. The optimized thickness was obtained by interacting a sequential quadratic programming (SQP) algorithm and an ABAQUS software to calculate an objective function. It was confirmed that the thickness of UD GFRP increased with a decrease of the restrained tip deflection when a thickness of UD CFRP laminates was constrained to 9 mm. The weight of the optimized spar-cap increased up to 96.2% while the maximum longitudinal tensile stress decreased up to 24.6%. The thickness of UD GFRP laminates increased with a decrease of the thickness of UD CFRP laminates when the tip deflection was constrained to 126.83 mm. The weight increased up to 40.1%, but the material cost decreased up to 16.97%. Finally, the relationships among the weight, internal tensile stress, and material costs were presented based on the optimized thicknesses of the spar cap.
Keywords
tidal current power; composite blades; Sequential Quadratic Programming; weight optimization; finite element analysis;
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  • Reference
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