초록

Tire manufactures have dealt with noise problem by varying the pitch of the tread. The various formulas for the variations are generally determined differently, however. Often these variations are based on a combination of trial and error, intuition, and economics. Some manufactures have models and analogs to test tread patterns and their variations. These efforts, however practical, do not determine the best variation beforehand or guarantee the best results. For this reason it was felt that a general mathematical approach for determining the best variation was needed. Moreover, the method should be completely general, easy to use,and sufficiently accurate. This paper discusses a mathematical method called Mechanical Frequency Modulation(MFM) which meets the above requirements. Thus, MFM pertains to computing an irregular time sequence of events so that the resulting excitation spectrum is shaped to a preferred form. The first part of this paper treats the theoretical basis for computing an optimum variation ; the second part discusses experimental results and simulation program which corroborate the theory.

키워드

Frequency modulation(주파수변조), Groove(그루브), Lug(러그), Pitch Noise(피치소음)Pattern Noise(패턴소음), Tread(트레드)

참고문헌(5)open

  1. [기타] Varterasian, J. H / 1969 / Quieting Noise Mathematically Its Application to Snow Tires / SAE paper 690520

  2. [학술대회] Hayden, R. E / 1971 / Roadside Noise from the Interaction of a Rolling Tire with the Road Surface / Proceedings of the Purdue Noise Control Conference, Purdue University, Lafayette, Indianna : 59 ~ 64

  3. [학술지] Willett, P. R / 1975 / Tire Tread Pattern Sound Generation / Tire Science and Technology, TSTCA 3 (3) : 252 ~ 266

  4. [기타] Landers, S. P / 1975 / A Vibrational Sound Mechanism of Lug Type Tread Designs / SAE paper 762025

  5. [기타] Dorsch, L. T / 1976 / Prediction Tire Noise and Performance Interactions / SAE paper 762032