A wave model for a tyre belt was made for both one-dimensional waves and higher order travelling modes which have an integral number of half-wavelengths across the belt. The model included bending, tension, shear and rotary inertia. Sidewalls could be included but are not considered here. The wave types are uncoupled from each other because a symmetrical belt section is assumed. It was found that tension waves tend to dominate below 100 Hz, and shear waves dominate above 2 kHz. Bending waves are most significant between these extremes. There is also a rotational wave that cuts in at about 2 kHz which travels at speeds close to that of a longitudinal wave. Wave speeds at about 70 m/s were measured and predicted below 500 Hz, and also wave speeds of about 140m/s were measured and predicted around 2 kHz. The agreement of the wave speeds gives some support for the validity of this model. Realistic loss factors of O-15 were used in the modelling which suggested that no modal behaviour around the belt could occur above 500 Hz. This means that the infinite model suggested would be valid for predicting sound radiation, which tends to be most significant between 500 Hz and 2 kHz.


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    Title :

    A wave model for a pneumatic tyre belt


    Contributors:

    Published in:

    Publication date :

    2002


    Size :

    19 Seiten, 15 Bilder, 1 Tabelle, 5 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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