Principle and method of low noise tread patterns' design

The principle and method of low noise tread patterns design and the assessment criteria of low noise are described.The principle of low noise tread patterns design is as follows:a)the width ratios between different tread blocks and different tread grooves should be irrational;b) the more tread ribs,the lower tread noise;c)the pitch ratios of tread patterns should be irrational;d)the pitch series of tread patterns should not be arranged periodically;e)the tread patterns units should be reasonably misaligned,and the ratio between the deviation and the tread patterns period should not be integral;and the longer tread patterns period,the lower tread noise.The various tread patterns with low noise are designed based on the above said principle,the noises of these tread patterns are simulated by the computer,and the various designs are compared and optimized according to the assessment criteria of low noise to obtain the optimum design.