Conclusions
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1.
Maximal volumetric energy capacity Wv is usually limited by the strength of the spokes. Winding of the chords with prestress therefore does not increase the maximal energy capacity of chord flywheels. However, with actual flywheels with specified values of m, S/S0, whose destruction begins with lamination due to radial stresses, winding of the chords with prestress reduces the radial tensile stresses in the rim and thereby increases the values of W and Wv.
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2.
The maximal volumetric energy capacity can be increased by using different composite materials for the spokes and the rim and/or by changing the geometry of the system of chords (the number of thickness of the spokes).
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Literature Cited
G. G. Portnov and V. L. Kulakov, “Investigation of the energy capacity of composite flywheels made by winding,” Mekh. Polim., No. 1, 73–81 (1978).
G. G. Portnov and V. L. Kulakov, “Specific mass energy capacity of composite disk flywheels,” Mekh. Kompozitn. Mater., No. 5, 887–894 (1980).
G. G. Portnov and Yu. M. Tarnopol'skii, “Energy capacity of rotating composite disks and shells (review),” Mekh. Kompozitn. Mater., No. 2, 290–300 (1982).
P. A. Moorlat and G. G. Portnov, “Calculation of the state of stress and strain of a chord flywheel with spokes,” Mekh. Kompozitn. Mater., No. 5, 853–862 (1983).
S.G. Lekhnitskii, Anisotropic Lamellae [in Russian], Gostekhizdat, Moscow (1957).
Additional information
All-Union Research Institute of Electrical Machinery Construction, Leningrad. Translated from Problemy Prochnosti, No. 2, pp. 15–18, February, 1987.
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Kustova, I.A. Increasing the volumetric energy capacity of chord flywheels. Strength Mater 19, 156–158 (1987). https://doi.org/10.1007/BF01523492
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DOI: https://doi.org/10.1007/BF01523492