This study analyzes performance-cost ratio of composite(GFRP) wind-towers by fiber reinforcement angle and determines their optimal fiber angle. The finite element models for composite structures using the ANSYS program described in this paper is attractive not only because it shows excellent accuracy in analysis but also it shows the effect of the geometrical combination. New results reported in this paper are focused on the significant effects of the cost for various parameters, such as thicknesses of outer shells and stiffeners. From the numerical examples, optimal fiber angles were determined as 80°∼90°.

• 이상열(안동대학교 토목공학과 조교수) | Lee, Sang-Youl
• 지효선(대원대학 철도건설과 부교수) | Ji, Hyo-Seon
• 손병직(건양대학교 건설환경공학과 부교수) | Son, Byung Jik Corresponding author