Analysis of stress characteristics of energy storage flywheel with different materials

doi:10.12028/j.issn.2095-4239.2019.0106

Abstract

Abstract: A finite element model of energy storage flywheel was established in order to obtain the stress characteristics and to optimize its structure. The stress characteristics analyses of the aluminum alloy (7075) flywheel at a given speed, at different rotational speed, and with different materials were carried out based on Workbench. The results showed that the maximum radial stress appeared on the inner wall of aluminum alloy (7075) flywheel at a rotational speed of 5000 r/min and gradually decreased outwardly, with a maximum value of 27.047 MPa. The maximum circumferential stress appeared at the intersection of the flywheel flange and the wheel disc, with a maximum value of 13.623 MPa. With the increase of rotational speed, the stress value also increases, but the position of the maximum stress does not change. At the same speed, aluminum alloy (7075) is superior to the other three alloys as flywheel material. The research results can provide important reference for the design and optimization of energy storage flywheel structure.

Key words: energy storage flywheel, Workbench, radial stress, circumferential stress

CLC Number:

TH133.7

SU Fang, WANG Chensheng, ZHAO Haiyan, LEI Meirong. Analysis of stress characteristics of energy storage flywheel with different materials[J]. Energy Storage Science and Technology, 2019, 8(6): 1235-1240.

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