New procedures are proposed to estimate the amplitude-sensitive parameters of hydraulic engine mounts that typically exhibit many nonlinearities. The estimation is based on the premise that the analyst has access to limited dynamic stiffness test data (say up to 50 Hz), and the detailed laboratory work required for the nonlinear model development would be minimized. By using an analogous mechanical model, a 3rd/2nd type transfer function is suggested to curve-fit the empirical dynamic stiffness data. Key parameters (such as the inertia-augmented fluid damping and decoupler gap length) are approximated and the effects of some system nonlinearities (such as the vacuum-induced asymmetric chamber compliance) are quantified, leading to a quasi-linear model. For the sake of illustration, transient predictions for a free decoupler mount are made; simulations match well with measurements. Main simplifications and limitations of the method are briefly discussed.


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    Titel :

    Improved Estimation of Linear and Nonlinear Hydraulic Mount Models for Transient Responses


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Singh, Rajendra (Autor:in) / He, Song (Autor:in)

    Kongress:

    SAE 2005 Noise and Vibration Conference and Exhibition ; 2005



    Erscheinungsdatum :

    2005-05-16




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Improved estimation of linear and nonlinear hydraulic mount models for transient responses

    He,S. / Singh,R. / Ohio State Univ.,US | Kraftfahrwesen | 2005




    Transient response of a hydraulic engine mount

    Adiguna, H. | Online Contents | 2003


    Transient response evaluation of a hydraulic engine mount

    Singh, R. / Adiguna, H. / Tiwari, M. et al. | Tema Archiv | 2002