This paper investigates the applicability of nonlinear finite elements to the difficult task of parameter identification of the structural behavior of passive hydraulic engine mounts. By using hyperelastic constitutive relationships the incompressible nature of the rubber materials that make up the bulk of the engine mount are accurately described and the results of such analysis are used directly in previously developed lumped parameter models to fully describe the dynamic behavior of two distinct hydraulic engine mounts. It has been illustrated that finite element analysis provides an accurate and highly effective method in parameter identification to aid in the design process of such devices. In addition, the accuracy of the finite element analysis as compared to experiment for describing rubber material incompressible behavior characteristics has been verified on a practical example. Along with using the finite element models, the lumped parameter modeling introduced in the first paper and extended here is appropriate and effective for describing the nonlinear behavior of hydraulic mounts in a frequency domain thereby presenting an attractive, efficient and effective tool for design and analysis of nonlinear suspensions. In addition to illustrating that nonlinear finite elements are effective as a design tool for hydraulic mounts the superiority of the floatingdecoupler mount design in isolating vibration and providing a means of frequency dependent damping has been illustrated noting that for the system to exhibit a frequency dependent damping characteristic the switching mechanism must be decoupled from the actual input excitation of the system and allowed to react to the behavior of the system as a whole.


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    Titel :

    Dynamic behavior comparison of passive hydraulic engine mounts. Part 2: Finite element analysis


    Weitere Titelangaben:

    Vergleich des dynamischen Verhaltens passiver dynamischer Motoraufhängungen. Teil 2: Finite Elemente Analyse


    Beteiligte:

    Erschienen in:

    Journal of Sound and Vibration ; 290 , 3-5 ; 1071-1090


    Erscheinungsdatum :

    2006


    Format / Umfang :

    20 Seiten, 22 Bilder, 4 Tabellen, 10 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch







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    Little, E. / Kashani, R. / American Society of Mechanical Engineers et al. | British Library Conference Proceedings | 1995


    Adaptive Hydraulic Engine Mounts

    Graf, Peter L. / Shoureshi, Rahmat / Houston, Terry L. | SAE Technical Papers | 1986