Analysis and optimization of an interference fitted composite material rotor of a superconducting energy storage flywheel

doi:10.3969/j.issn.2095-4239.2013.03.002

Energy Storage Science and Technology ›› 2013, Vol. 2 ›› Issue (3): 185-188.doi: 10.3969/j.issn.2095-4239.2013.03.002

• Physical energy storage • Previous Articles Next Articles

Analysis and optimization of an interference fitted composite material rotor of a superconducting energy storage flywheel

TANG Jiqiang, ZHANG Yongbin, LIU Gang

Science and Technology on Initial Laboratory,Beijing 100191,China; Fundamental Science on Novel Instrument & Navigation System Technology Laboratory,Beijing 100191,China

Received:2013-04-12 Online:2013-06-19 Published:2013-06-19

Abstract

Abstract: To achieve a high specific energy density, a metal rotor without a shaft is designed to consists of a hollow hub and three composite cylindrical rings fitted in interference. A mathematical model is formulated for the stress distribution using a simplified two dimensional stress model. Optimization is carried out by using the total storage energy density as the objective function and the thickness of the composite rings and the interference value between rings as the variables. It is found that the optimization increases the upper limit of the rotor speed from 50000 r/min to 57797 r/min, and the corresponding total storage energy capacity increases by 34.5%, from 1147 W·h to 1543 W·h.

Key words: energy storage flywheel, composite material rotor, multidisciplinary design, interference fit

CLC Number:

V249.1

TANG Jiqiang, ZHANG Yongbin, LIU Gang. Analysis and optimization of an interference fitted composite material rotor of a superconducting energy storage flywheel[J]. Energy Storage Science and Technology, 2013, 2(3): 185-188.

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Analysis and optimization of an interference fitted composite material rotor of a superconducting energy storage flywheel

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