Title:
FLYWHEEL
Document Type and Number:
Japanese Patent JPS60201139
Kind Code:
A
Abstract:
PURPOSE:To enhance the weight energy density and volumetric energy density of a flywheel made of fiber-reinforced resin, by building the flywheel so that the specific stress (ratio of strength to density) which is caused in the circumferential direction of the flywheel is uniform. CONSTITUTION:A flywheel is made of fiber-reinforced resin in such a manner that the specific modulus of elasticity (ratio of modulus of longitudinal elasticity to density) of a disk changes outwards in the radial direction. To radially alter the modulus of longitudinal elasticity in the circumferential direction of the disk, the content of fibers in the circumferential or radial direction is varied in the radial direction. To radially alter the density of the disk, fine powder of a metal is mixed in the matrix of the fiber-reinforced resin and the ratio of the mixing is varied. As a result, the specific stress (ratio of strength to density) which is caused in the circumferential direction of the flywheel is made uniform.
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Inventors:
MIYATA KENJI
Application Number:
JP5869984A
Publication Date:
October 11, 1985
Filing Date:
March 26, 1984
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F16F15/30; F16C15/00; F16F15/305; (IPC1-7): F16F15/30
Attorney, Agent or Firm:
Tatsuyuki Unuma