Spreading noise generated by load supporting elements

Details Spreading noise generated by load supporting elements Spreading noise generated by load supporting elements

B - Operations, Transporting

60

C

152/124

B60C 11/06 (1980.01)

Patent

CA 1176966

SPREADING NOISE GENERATED BY LOAD SUPPORTING ELEMENTS Abstract Noise generated by load supporting elements of an apparatus (e.g., tread of a tire) having a plurality of repeating design cycles is spread over a broad frequency spectrum. This is accomplished by designing load bearing elements in accordance with the following procedure. First, determining the maximum number of repeating design cycles which may be placed about the apparatus; Second, selecting a maximum pitch ratio; Third, determining the appropriate number of harmonic segments into which the appartus can be divided; Fourth, determining the size of each of the harmonic segments and the number of design cycles for each of the harmonic segments; Fifth, arranging the various design cycles in each of the harmonic segments so that the wave length of the predominant modulation frequency of the segment corresponds to the fundamental length of that segment.

431697

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