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公开(公告)号:US5974872A
公开(公告)日:1999-11-02
申请号:US849245
申请日:1997-06-12
CPC分类号: B60C11/0318 , G01M17/025
摘要: A pneumatic tire has a tread pattern shaped in such a fashion that pitches determined by groove portions disposed on a tread surface in a predetermined pitch in at least a tire circumferential direction have at least three different kinds of pitch lengths. An amplitude waveform corresponding to the frequency of noise resulting from the pitch arrangement per circumference of the tire is determined by a noise simulation method, and whether or not the pitch arrangement determined by the noise simulation is a pitch arrangement of a low pattern noise is evaluated from the value of a correlational coefficient R between the amplitude waveform and a quartic expression obtained by the regression of the amplitude waveform.
摘要翻译: PCT No.PCT / JP96 / 02992 Sec。 371日期:1997年6月12日 102(e)1997年6月12日PCT PCT 1996年10月16日PCT公布。 第WO97 / 14946号公报 日期1997年4月24日充气轮胎具有胎面花纹,胎面花纹的形状使得至少在轮胎周向上以预定间距设置在胎面表面上的槽部确定的间距具有至少三种不同的节距长度。 通过噪声模拟方法确定由轮胎每圆周的俯仰配置产生的噪声频率对应的振幅波形,并且评估由噪声模拟确定的俯仰布置是否是低图案噪声的俯仰布置 从振幅波形和通过振幅波形的回归获得的四次表达式之间的相关系数R的值。