吉林大学学报(工学版)

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Analysis on stress and displacement of a composite flywheel composed of twolayer rotor with pre-displacement

Li Cheng1, Liu Zhi-hua1, Zhang Ping2   

  1. 1.School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450002, China; 2.State Key Lab of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • Received:2006-06-22 Revised:2006-08-29 Online:2007-07-01 Published:2007-07-01
  • Contact: Li Cheng

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Abstract: The flywheel composed of two-layer rotor is fabricated usually by extrusion of the inner rotor and the outer rotor together, so there is a predisplacement in the interface between the two layers. In view of the structure feature of the composite flywheel rotor, a calculation model was built for the rotor on the basis of the heterogeneous anisotropic elastic theory, and the analytical formulas for the stress and the displacement under the working speed of the composite flywheel composed of two-layer rotor with the pre-displacement were derived to calculate the radial and circumferential stresses and the radial displacement at any point. The effects of the radial and circumferential stresses and the radial displacement of different positions under different speeds were discussed according to the estableshed calculation model.

Key words: solid mechanics, two-layer rotor structure, composite energy storage flywheel, pre-displacement, stress distribution, working speed

CLC Number: 

  • O342
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