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Titolo:
Effects of material properties on the total stored energy of a hybrid flywheel rotor
Autore:
Ha, SK; Yoon, YB; Han, SC;
Indirizzi:
Hanyang Univ, Dept Mech Engn, Ansan 425791, Kyungki Do, South Korea Hanyang Univ Ansan Kyungki Do South Korea 425791 Kyungki Do, South Korea Korea Elect Power Res Inst, Power Syst Lab, Taejon, South Korea Korea Elect Power Res Inst Taejon South Korea Lab, Taejon, South Korea
Titolo Testata:
ARCHIVE OF APPLIED MECHANICS
fascicolo: 8-9, volume: 70, anno: 2000,
pagine: 571 - 584
SICI:
0939-1533(200010)70:8-9<571:EOMPOT>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
OPTIMUM DESIGN; STORAGE SYSTEM;
Keywords:
composite; flywheel rotor; generalized plane strain; stored energy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Ha, SK Hanyang Univ, Dept Mech Engn, 1271 Sal Dong, Ansan 425791, Kyungki Do, South Korea Hanyang Univ 1271 Sal Dong Ansan Kyungki Do South Korea 425791 orea
Citazione:
S.K. Ha et al., "Effects of material properties on the total stored energy of a hybrid flywheel rotor", ARCH APPL M, 70(8-9), 2000, pp. 571-584

Abstract

A numerical method based on the assumption of a generalized plane strain (GPS) state is presented for calculating the stress and strength ratio distributions of the rotating composite flywheel rotor of varying material properties in the radial direction. The rotor is divided into many rings and each ring has constant material properties. All the rings are assumed to expand and have the same axial strain. A three-dimensional finite element methodis then used to verify the accuracy of the present method. This method gives a better solution for most of the rotors than other methods of a plane stress or plane strain state. After verification, the effects of material properties on the total stored energy (TSE) of the composite flywheel rotor are investigated. For this purpose, the material properties of the rotor, i.e. circumferential and radial Young's moduli, ply angles and mass densitiesare expressed by power functions of the radius, and the rotor is analyzed. The analysis shows that TSE can be most effectively increased by changing the circumferential Young's moduli along the radius, which amounts to over 300% of TSE of the constant material properties. The variation of ply angles along the radius can increase TSE by about 30% at most. The method of changing the mass densities along the radius could be also effective but its effects are not so noticeable in the rotor where the circumferential stiffness is properly arranged.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 04:30:06