Temat: moment skręcający - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Design and analysis of interior composite-rotor bearingless permanent magnet synchronous motors with two layer permanent magnets
Autorzy:: Sun, X.
Su, B.
Chen, L.
Yang, Z.
Li, K.
Powiązania:: https://bibliotekanauki.pl/articles/200490.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: bearingless motor
permanent magnet motor
finite element analysis
cogging torque
static electromagnetic characteristics
silnik z magnesem trwałym
analiza elementów skończonych
moment skręcający
właściwości elektromagnetyczne
silnik bezłożyskowy
Opis:: In this paper, a new type of interior composite-rotor bearingless permanent magnet synchronous motors (BPMSMs) with two layer permanent magnets (PMs) is proposed. In order to reduce the torque ripple of this kind of motors, the sizes of PMs are optimized. Moreover, the magnetic field analysis of the interior composite-rotor BPMSM with two layer PMs is carried out by the finite element method (FEM). The corresponding static electronic magnetic characteristics at no load, including magnetic field, PM flux linkage and inductance, are studied in detail. In addition, electromagnetic torque characteristics and suspension force characteristics are also investigated thoroughly. The results of the analysis and simulation lay a significant foundation for further research on the interior composite-rotor BPMSMs with two layer PMs.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 6; 833-843
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Simulation of thermomechanical processes in disc brakes of wheeled vehicles
Autorzy:: Hrevtsev, O.
Selivanova, N.
Popovych, P.
Poberezhny, L.
Sakhno, V.
Shevchuk, O.
Poberezhna, L.
Murovanyi, I.
Hrytsanchuk, A.
Romanyshyn, O.
Powiązania:: https://bibliotekanauki.pl/articles/1818803.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: disc brake
wheeled vehicle
angular velocity
thermodynamically reversible process
centrifugal force
time of relaxation
isotropic elastic medium
torsional moment
hamulec tarczowy
pojazd kołowy
prędkość kątowa
siła odśrodkowa
izotropowy ośrodek sprężysty
moment skręcający
Opis:: Purpose: Ensuring the required operational reliability of disc brakes by forecasting their technical condition taking into account thermomechanical processes. Design/methodology/approach: Differential equations of rotation of a rigid body around a fixed axis are solved, it is established that the equations of motion and the equations of thermal conductivity are indirectly related. The use of these analytical dependences provides a better understanding of thermomechanical transients. Findings: The solution is obtained on the basis of the differential equation of thermal conductivity of the hyperbolic type, which does not allow an infinite velocity of propagation of temperature perturbations in contrast to the differential equation of thermal conductivity of the parabolic Fourier type. The obtained analytical dependences provide a better understanding of thermomechanical transients and develop a theoretical basis for determining stresses and heat fluxes in solving problems of reliability and durability of disc brakes. Research limitations/implications: The work uses generally accepted assumptions and limitations for thermomechanical calculations. Practical implications: It is shown, that transients in a mechanical system - a brake disk at impulse loadings cause emergence of thermal effects which arise under the influence of external loadings. Originality/value: The application of these analytical dependences provides a better understanding of thermomechanical transients and develops a theoretical basis for solving problems of reliability and durability of disc brakes.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2021, 104, 1; 11--20
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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