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Design of optimal fiber angles in the laminated composite fan blades

적층 복합재 팬-블레이드의 적층각도 최적화 설계

  • Jeong, Jae-Yeon (Dept. of Mechanical Design, Graduate School of Hanyang University) ;
  • Jo, Yeong-Su (Dept. of Mechanical Design, Graduate School of Hanyang University) ;
  • Ha, Seong-Gyu (Dept. of Mechanical Engineering, Hanyang University)
  • 정재연 (한양대학교 대학원 기계설계학과) ;
  • 조영수 (한양대학교 대학원 기계설계학과) ;
  • 하성규 (한양대학교 기계공학과)
  • Published : 1997.11.01

Abstract

The layered composites have a character to change of structure stiffness with respect to the layup angles. The deformations in the fan-blades to be initially designed by considering efficiency and noise, etc., which arise due to the pressure during the fan operation, can make the fan inefficient. Thus, so as to minimize the deformations of the blades, it is needed to increase the stiffness of the blades. An investigation has been performed to develop the three dimensional layered composite shell element with the drilling degree of freedom and the optimization module for finding optimal layup angles with sensitivity analysis. And then they have been verified. In this study, the analysis model is engine cooling fan of automobile. In order to analyzes the stiffness of the composite fan blades, finite element analysis is performed. In addition, it is linked with optimal design process, and then the optimal angles that can maximize the stiffness of the blades are found. In the optimal design process, the deformations of the blades are considered as multiobjective functions, and this results minimum bending and twisting simultaneously.

Keywords

Laminated Composite;Finite Element Analysis;Design Sensitivity Analysis;Layup Angle;Multi-objective Function;Fan-Blade