Spin test of three-dimensional composite rotor for flywheel energy storage system. (February 2016)

• Record Type: Journal Article
• Authors: Hiroshima, N.; Hatta, H.; Koyama, M.; Yoshimura, J.; Nagura, Y.; Goto, K.; Kogo, Y.
• Is Part Of: Composite structures. Volume 136(2016)
• Page Start: 626
• Page End: 634
• Publication Date: 2016-02
• Subjects: 3-Dimensional reinforcement -- Finite element analysis (FEA) -- Vibration -- Resin transfer molding (RTM); Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2015.10.035
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: A rotating disk often undergoes severe vibration at high rotation speeds because of unstable joining between the disk and a drive shaft. As described herein, three connection methods between a driving shaft and an annular rotation disk made of three-dimensionally carbon-fiber reinforced composite were discussed to achieve stable rotation at high rotation speeds by changing the hub material and joining geometry: the connecting device. In two of the three methods, the vibration amplitude increased at a tip speed higher than 500 m/s. Key factors that caused the vibration were analyzed. Results show that the third method by which a resin ring (hub) was inserted between the disk and rotation shaft maintained stable joining, even at high-speed rotation.