Study on the strength of FRP Rotor Blade and Structural Optimization

• Main Authors: Chin-Chih Chi, 紀金池
• Other Authors: Ya-Jung Lee
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/76450032470488992767

碩士 === 國立臺灣大學 === 工程科學與海洋工程學系 === 91 === Research on optimization of FRP rotor blade by the finite element method is accomplished. Utilizing ABAQUS software to model the rotor blade and analyze it by large deformation theory numerically. Optimal tool is the genetic algorithms﹙GA﹚. GA has applied to the many optimal problems by the design variables and objection function. GA searches the global optimum in the region that has many peaks by utilizing the basic operations of selection, crossover and mutate. There is twist deformation due to applying the loads to the rotor blade. The deformations make the aerodynamic force to change. There are harmful influence in design and controlling the rotor blade. FRP laminates may reinforce the structural directional stiffness to improve the drawback. The research is utilizing the material property and laminate angles of FRP laminates to obtain the smallest twist deformation. The restrictions on the optimal problem are stress failure of laminate materials, natural resonance of structure and minimum auto-rotational inertia moment.