According to the typical working conditions of a loader and considering the complexity of the working conditions, the hydrodynamic transmission powertrain system was modeled in this study. Because the hydrodynamic torque converter is a flexible fluid transmission component in the transmission system, this study proposes and establishes equivalent variable damping and equivalent variable stiffness models of the hydrodynamic torque converter. Based on this, a torsional vibration simulation model of the loader with variable damping and stiffness is proposed, and the frequencies and amplitudes of the torsional resonance modes of the transmission system varying with engine speed and hydrodynamic torque converter speed ratio are obtained. It is determined that the variable stiffness of the hydrodynamic torque converter has little effect on the natural frequency of the vehicle, and taking variable damping and stiffness as input, the natural frequency and resonance points of the transmission system can be calculated more accurately. The simulation modeling and calculation approach are experimentally verified, and the simulation results are valid and closer to the real resonance.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Modeling, calculation, and analysis of torsional vibration characteristics of the hydrodynamic transmission system in engineering vehicle


    Contributors:
    Ma, Wenxing (author) / Xie, Dapeng (author) / Wang, Zhihao (author) / Ran, Zilin (author) / Liu, Chunbao (author) / Wang, Songlin (author)


    Publication date :

    2022-07-01


    Size :

    16 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Torsional vibration behavior of hydrodynamic couplings

    Sideris,D. / Worsch,H. / Germanischer Lloyd,Hamburg,DE et al. | Automotive engineering | 1989


    Analysis of transmission box vibration characteristics under random road torsional excitation

    Fu, Shengping / Luo, Shanming / Huang, Hanlin | SAGE Publications | 2022


    Torsional vibration reduction with MAGSPLIT transmission

    Black,D.T. / Calverley,S.D. / Birchall,J.G. et al. | Automotive engineering | 2015


    Measurement of Transmission Rattle Sensitivity and Calculation of Driveline Torsional Vibration for Gear Rattle Analysis

    Chae, Chang-Kook / Schulz, Ingo / Kang, Koo-Tae et al. | SAE Technical Papers | 2005