1. Fabrication and mechanical behaviors of carbon fiber reinforced composite foldcore based on curved-crease origami
- Author
-
Linzhi Wu, Changping Song, Jian Xiong, and Yuntong Du
- Subjects
Fabrication ,Materials science ,Composite number ,General Engineering ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Finite element method ,0104 chemical sciences ,Molding (decorative) ,Buckling ,Fuselage ,Ceramics and Composites ,Fiber ,Composite material ,0210 nano-technology ,Failure mode and effects analysis - Abstract
A carbon fiber-reinforced composite foldcore based on curved-crease origami was designed and fabricated using a hot press molding method. The fabrication process based on curved-crease origami reduces the abrupt change in fiber direction and is more suitable for continuous fiber-reinforced composites. The analytical models based on differential and integral method for predicting the compressive stiffness and strength of curved-crease origami foldcores were developed first and a three-dimensional failure mechanism map was constructed. The compressive properties and failure modes of carbon fiber reinforced composite curved-crease origami foldcores were investigated through experiments and finite element analysis (FEA). A reasonable agreement among the analytical models, experiments, and FEA results was observed. The dominant failure mode in the curved-crease origami foldcores could change from buckling to crushing with the wall thickness of foldcores increasing when subjected to compressive loads. The novel curved-crease origami design with open core channels has potential to applications for lightweight multifunctional structures, such as fuselage panels of airplane.
- Published
- 2019