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Wyświetlanie 1-2 z 2
Tytuł:
Optimization of gear teeth in the wind turbine drive train with gear contact’s uncertainty using the reliability-based design optimization
Autorzy:
Lee, Changwoo
Park, Yonghui
Powiązania:
https://bibliotekanauki.pl/articles/27309867.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
wind turbine
drive train
gear
structural analysis
dynamics
Fourier transform
reliability based design optimization
turbina wiatrowa
układ napędowy
bieg
analiza strukturalna
dynamika
optymalizacja projektu oparta na niezawodności
Opis:
Although gear teeth give lots of advantages, there is a high possibility of failure in gear teeth in each gear stage in the drive train system. In this research, the authors developed proper gear teeth using the basic theorem of gear failure and reliability-based design optimization. A design variable characterized by a probability distribution was applied to the static stress analysis model and the dynamics analysis model to determine an objective function and constraint equations and to solve the reliability-based design optimization. For the optimization, the authors simulated the torsional drive train system which includes rotational coordinates. First, the authors established a static stress analysis model which gives information about endurance limit and bending strength. By expressing gear mesh stiffness in terms of the Fourier series, the equations of motion including the gear mesh models and kinematical relations in the drive train system were acquired in the form of the Lagrange equations and constraint equations. For the numerical analysis, the Newmark Beta method was used to get dynamic responses including gear mesh contact forces. From the results such as the gear mesh contact force, the authors calculated the probability of failure, arranged each probability and gear teeth, and proposed a reasonable and economic design of gear teeth.
Źródło:
Archive of Mechanical Engineering; 2022, LXIX, 4; 713--728
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the backlash in the single stage cycloidal gearbox
Autorzy:
Król, Roman
Powiązania:
https://bibliotekanauki.pl/articles/27309870.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
cycloidal gearbox
backlash
dynamics
multibody dynamics
multibody simulation
discrete Fourier transform
spectral analysis
FFT
przekładnia cykloidalna
reakcja
dynamika
dynamika wieloczłonowa
symulacja wieloobiektowa
dyskretna transformata Fouriera
analiza spektralna
Opis:
In this paper the analysis of backlash influence on the spectrum of torque at the output shaft of a cycloidal gearbox has been performed. The model of the single stage cycloidal gearbox was designed in the MSC Adams. The analysis for the excitation with the torque and the analysis with constant angular velocity of the input shaft were performed. For these analyses, the amplitude spectrums of the output torque for different backlashes was solved using FFT algorithm. The amplitude spectrums of the combined sine functions composed of the impact to impact times between the cycloidal wheel and the external sleeves were computed for verification. The performed studies show, that the backlash has significant influence on the output torque amplitude spectrum. Unfortunately the dependencies between the components of the spectrum and the backlash could not be expressed by linear equations, when vibrations of the output torque in the range of (350 Hz – 600 Hz) are considered. The gradual dependence can be found in the spectrum determined for the combined sine functions with half-periods equal impact-to-impact times. The spectrum is narrower for high values of backlash.
Źródło:
Archive of Mechanical Engineering; 2022, LXIX, 4; 693--711
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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