초록

Among many potential problems associated with automobiles, the problem regarded as most sensitive and important to the customers is the automobile’s quietness. In particular, because the trend toward the high-performance automobiles is increasing, the quietness should be considered reflecting the increasing demand of the customers for the comfort of automobile ride. Road noise is the low-frequency range in the region of 20Hz to 350Hz, generated when the tires are making contacts with the rough road surface while the automobile is running, in which the noises are resonating within the passenger compartment or with the automobile suspension. In this research, among the factors related to the road noise, the influencing factors associated with the suspension and the tire design were investigated. In particular, among the tire design factors, the structure and the rubber material were investigated as the influencing factors, and for the investigative purpose, experimental tires were manufactured and road noise evaluations were conducted thorough actual feeling tests. Then the test results and correlations were analyzed using the 6-Sigma statistical method. Results from this study shows that, among the tire design factors, the apex is the most influencing factor, in which the height of the apex is the key. The influential factors were found out to be apex height,belt angle, and tread hardness, in that order, and when the suspension is of a same kind, the tendency of the road noise was found to be similar.

키워드

Apex height(에이벡 높이), Belt angle(벨트 각도), Design factor(설계인자), Road noise(도로소음), Statistical method(통계적인 기법), Tread hardness(트레드 경도)

참고문헌(6)open

  1. [단행본] H. Y. Kim / 1997 / Automotive Suspension / Adtec : 45

  2. [단행본] Ulf Sandberg / 2002 / Tyre/Road noise as part of vehicle noise, Tyre/Road Noise Reference Book : 45 ~ 55

  3. [단행본] Ulf Sandberg / 2002 / Tyre/Road sources and generation mechanisms, Tyre/Road Noise Reference Book : 97 ~ 154

  4. [학술지] T. K. Lee / 2008 / Vibration analysis of automobile tire due to bump impact / Applied acoustics 69 : 473 ~ 478

  5. [학술지] 씨퀸 아드리안 / 2011 / 타이어 / 노면 소음 예측에 관한 연구 / 한국기계기술학회지 13 (4) : 77 ~ 84

  6. [학술지] 김형두 / 2012 / 항공기 소음에 기인한 영화관 실내소음의 저감대책 / 한국기계기술학회지 14 (5) : 31 ~ 36