3Dプリントによる製造を対象とした面内曲線状炭素繊維配置最適化設計

抄録

CFRP is known to its high specific strength and stiffness, and widely applied in many fields. However, because of its orthotropic mechanical properties, fiber orientation have to be considered in the design process. In addition, recently a new manufacturing method 3D printing of CFRP have developed. Which enabled to place carbon fiber filament curvilinearly. Thereby degree of freedom for design is outstandingly increased. Consequently, there is possibility of products, which have higher fracture strength than conventional one by controlling orthotropic properties in a ply. Thus in present paper, optimization of in-plane curvilinear fiber placement for the 3D printing and discussion of the manufacturability was conducted. As a result strength was significantly improved in terms of Tsai-Wu failure criteria after the optimization, and placement of the CFRP filament for the 3D printing was obtained