In recent years attainment of high automotive sound quality has become a major effort in automotive vehicle refinement programs. Low frequency vibration phenomena such as idle shake and tramission rattle have emerged as major issues in the efforts to minimize undesirable sound qualities. Low gear rattle noise is often touted to differentiate automobile quality. Transmission rattle is caused by engine excitation and backlash in geared transaxles. Backlash yields piecewise non-linear characteristics in gear mesh stiffness. Despite intensive research efforts in the past, it is known that numerical difficulties in handling the non-linearity have prohibited the development of general criteria of design of transmissions to eliminate the rattle noise. This paper describes an analysis technique for investigation of the rattle dynamics in geared transmissions. A new and powerful technique based on the finite element methode in the time domain (FET) is employed for steady-state motion analysis. In this approach, periodic response is sought via a set of algebraic equations in a fashion similar to the spatial finite element analysis used in solid mechanics. This approach offers several potential advantages over conventional numerical methods. It is shown to be particularly effectiove for obtaining parametric solutions of gear motions.


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    Title :

    Modeling and analysis of automotive transmission rattle


    Additional title:

    Modell und Analyse des Ratterns in Kraftfahrzeuggetrieben


    Contributors:
    Wang, Y. (author)


    Publication date :

    1997


    Size :

    6 Seiten, 8 Bilder, 8 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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