Design of a hybrid composite flywheel multi-rim rotor system using geometric scaling factors
- Authors
- Ha, Sung K.; Kim, Jae H.; Han, Young H.
- Issue Date
- Apr-2008
- Publisher
- SAGE PUBLICATIONS LTD
- Keywords
- multi-rim flywheel rotor; press-fit; scaling effect; residual stresses
- Citation
- JOURNAL OF COMPOSITE MATERIALS, v.42, no.8, pp.771 - 785
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF COMPOSITE MATERIALS
- Volume
- 42
- Number
- 8
- Start Page
- 771
- End Page
- 785
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/178831
- DOI
- 10.1177/0021998308088590
- ISSN
- 0021-9983
- Abstract
- The effects of geometric scaling on the static and dynamic behavior of a multi-rim hybrid press-fitted composite flywheel rotor are investigated and applied to its design procedure. It is verified that the stresses among the scaled multi-rim hybrid rotors remain the same as long as press-fit interferences are linearly scaled, curing temperature remains unchanged, and the rotational speed is inversely proportional. With the linearly scaled supporting stiffness of the scaled rotor and shaft, a relationship between inversely scaled critical speeds and rotational speeds remains unchanged. Double rim rotors of 5 kWh and 100 kWh energy storage are designed by scaling an optimized 0.5 kWh multi-rim rotor. Then, the rotors of 5 kWh were manufactured by wet-winding E-glass and T-700 fibers with a low-temperature cured epoxy system.
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