Selection of viscous damping coefficients using the continuous wavelet transform method for a gear system

• Autorzy: Yousfi Nourhaine , Zghal Bacem , Akrout Ali , Walha Lassaad , Haddar Mohamed

Identyfikatory

DOI

10.15632/jtam-pl/121945

• Języki publikacji: EN

Abstrakty

EN

Viscous damping is frequently used in the equation of motion to present the dissipation mechanism of a mechanical system. The orders of frequencies can be easily selected to determine viscous damping coefficients (VDCs) when the degree of freedom of the structure is low. For complex structures, difficulties in selecting the orders of reference frequencies to obtain reasonable VSCs are encountered. This paper mainly discusses the capability of the CWT method to select optimum frequencies of viscous damping formulation. The proposed procedure considers both the classical Rayleigh, modal and the proposed full model modal damping. The method is validated using a numerical time domain response of a two-stage gear system.

Słowa kluczowe

EN

viscous damping formulation; optimum frequencies; continuous wavelet transform; dominant frequency

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2020
• Tom: Vol. 58 nr 3
• Strony: 585--598
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Yousfi Nourhaine

• Mechanics, Modelling and Production Research Laboratory (LA2MP), National Engineering School of Sfax, University of Sfax, Tunisia
• National Engineering School of Tunis, University of Tunis El-Manar, Tunisia

autor

Zghal Bacem

• Mechanics, Modelling and Production Research Laboratory (LA2MP), National Engineering School of Sfax, University of Sfax, Tunisia

autor

Akrout Ali

• Mechanics, Modelling and Production Research Laboratory (LA2MP), National Engineering School of Sfax, University of Sfax, Tunisia
• National Engineering School of Tunis, University of Tunis El-Manar, Tunisia

autor

Walha Lassaad

• Mechanics, Modelling and Production Research Laboratory (LA2MP), National Engineering School of Sfax, University of Sfax, Tunisia

autor

Haddar Mohamed

• Mechanics, Modelling and Production Research Laboratory (LA2MP), National Engineering School of Sfax, University of Sfax, Tunisia

Bibliografia

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• 18. Walha L., Fakhfakh T., Haddar M., 2009, Nonlinear dynamics of a two-stage gear system with mesh stiffness fluctuation, bearing flexibility and backlash, Mechanism and Machine Theory, 44, 1058-1069.
• 19. Yassine D., Hammami A., Walha L., Haddar M.., 2014, Effects of gear mesh fluctuation and defaults on the dynamic behaviour of two-stage straight bevel system, Mechanism and Machine Theory, 82, 71-86.
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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).