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Wyszukujesz frazę "toroidal core" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Optimum EMC design of flyback and load resonant converters using toroids with air gaps
Autorzy:
Stadler, A.
Albach, M.
Durbaum, T.
Powiązania:
https://bibliotekanauki.pl/articles/262737.pdf
Data publikacji:
2005
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
transformers
toroidal core
magnetic stray field
power converter
Opis:
In this paper the external magnetic stray field is investigated in transformers realized on gapped toroids with a rectangular cross section. An analytical method is used in which the field distribution is calculated by means of orthogonal expansion. As a conclusion it is shown that optimum EMC design for the case of a flyback converter is given by the results for a simple inductor. In case of a load resonant converter minimum parasitic induction is obtained, if the winding conducting maximum current is located exactly above the air gap. The second winding has to be located as close as possible to the first one with respect to the desired value of the total leakage inductance.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2005, 11, 2; 15-22
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear postbuckling behavior of auxetic-core toroidal shell segments with Graphene reinforced face sheets under axial loads
Autorzy:
Nam, V. H.
Duc, V. M.
Doan, C. V.
Thanh Xuan, N. T.
Phuong, N. T.
Powiązania:
https://bibliotekanauki.pl/articles/38693072.pdf
Data publikacji:
2022
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
axial compressive
tensile load
nonlinear buckling
graphene reinforced composite
auxetic-core
face sheet
toroidal shell segment
Opis:
The main aim of this paper is to provide an analytical approach for the nonlinear buckling behaviors of toroidal shell segments made by three layers included honeycomb auxetic-core and two Graphene reinforced face sheets under axial compressive or tensile loads. The auxetic core is designed in a honeycomb form and three distribution laws of Graphene are considered for two symmetric face sheets. The homogenization technique for honeycomb auxetic plates and shells is applied to establish the stiffness formulations of the core. By approximating the doubly curved coordinate to the simpler coordinate with the Stein and McElman assumption, the nonlinear basic equations are formulated using the nonlinear Donnell shell theory and the model of the two-parameter foundation. The Galerkin method can be performed three times for three states of buckling responses and the expressions of the load-deflection postbuckling curves can be determined. The numerical examinations present that the bifurcation buckling occurs with both axial tensile and compressive loads for convex and concave shells and the significantly beneficial effects of auxetic core and functionally graded Graphene reinforced face sheets on nonlinear buckling responses of shell segments.
Źródło:
Archives of Mechanics; 2022, 74, 2-3; 89-108
0373-2029
Pojawia się w:
Archives of Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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