The quality expectations of the customers, driven by the experiences of the modern car industry, lead to the need of improved noise and vibration behavior of the whole tractor, but the cabin interior acoustics in particular. Additionally the demands of a working place and the demand in higher concentration of the operator makes it necessary to improve the Noise, Vibration and Harshness (NVH) behavior of the tractor cabin. A combined experimental and numerical simulation approach shows how NVH can be included into the early stages of tractor development and thus more tightly included into the overall design process. It can be shown, that beside the already well known NVH sources also the tires and especially the tire lugs play an important role for operator ear noise effects, especially on fast running tractors. The 110 Hz Booming Noise problem is a general problem of fast running tractors with similar cabin shapes and similar cabin designs (huge transparent areas with low acoustic absorption). Such effects can be reproduced in laboratory environment sufficiently, which allows for much more effective testing compared to field or track tests. Based on such measurements a simulation model can be derived, which is able to simulate the very special effect of tire lug initiate noise as well as to predict the special sound pressure effects in the tractor wheel house. Such a model can be used to front load the NVH based design in the complete vehicle design process into much earlier phases. The co-operation between tire- and tractor manufacturers has to be strengthened into this relatively new field of activities to furthermore protect the operator and the environment from unnecessary sound and noise and to fulfill the quality and comfort expectations of the customers.


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    Titel :

    Experimental and numerical NVH analysis and simulation for tractor cabin booming noise reduction


    Beteiligte:


    Erscheinungsdatum :

    2007


    Format / Umfang :

    7 Seiten, 3 Bilder, 1 Tabelle, 6 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch