Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

Proposal of an Equation for the Evaluation of Discomfort of a Seated Human Body Due to the Differential Vertical Vibration at the Seat and the Floor

시트와 바닥 진동의 위상차가 안락성에 미치는 영향을 평가하기 위한 수식의 제안

  • Published : 2002.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

A modified equation for the evaluation of discomfort of a seated human body exposed to differential vibration at the seat and the floor was proposed in this paper. Through the review and analysis of the preceding studies, effect of phase difference between the seat and the floor vibration on discomfort were quantitatively identified. The phase effect was shown to be governed by not only phase difference between the two vibrations but both their frequency and the magnitude, which means the present equation for the evaluation of perceptual amount of vibration provided by ISO 2631-1 should be modified. The proposed equation was developed such that the correction function was multiplied to the present equation. The correction function consisted of three parts, each of them represented the effect by phase difference, frequency and vibration magnitude on discomfort respectively.

Keywords

References

  1. Griffin, M. J., 1990, Handbook of Human Vibration. Academic Press.
  2. British Standards Institution, BS 6841 1987, Guide to the Measurement and Evaluation of Human Exposure to Whole-body Mechanical Vibration and Repeated Shock.
  3. International Organization for Standardization, ISO 2631-1 1997, Mechanical Vibration and Shock-evaluation of Human Exposure to Wholebody Vibration. Part 1: General Requirements.
  4. Griffin, M. J. and Whitham, E. M., 1997, "Assessing the Discomfort of Dual-axis Wholebody Vibration," Journal of Sound and Vibration, 54, pp, I07-116.
  5. Fairley, T. E. and Griffin, M. J., 1988, "Predicting the Discomfort Caused by Simultaneous Vertical and Fore-and-aft Whole-body Vibration," Journal of Sound and Vibration 124(1), pp. 141-156. https://doi.org/10.1016/S0022-460X(88)81410-X
  6. Suggs. C. W., Abrams Jr. C. F., Entrekin. R, Elfring, G. and Smith, J., 1976, "Differential Vibration of the Feet and Trunk of Humans in Transport Environments," NASA Report, NGR34-002-189.
  7. Jang, H.-K. and Griffin, M. J., 2000, "Effect of Phase, Frequency. Magnitude and Posture on Discomfort Associated with Differential Vertical Vibration at the Seat and Feet," Journal of Sound and Vibration, 229(2), PP. 273-286. https://doi.org/10.1006/jsvi.1999.2489
  8. Jang, H.-K. and Griffin, M. J., 1999, "Effect of Phase of Differential Vertical Vibration at the Seat and Feet on Discomfort," Journal. of Sound and Vibration., 223(5), pp. 785-794. https://doi.org/10.1006/jsvi.1999.2156
  9. 장한기, Griffin M. J., 1998, "인체진동의 주관적 평가에 관한 연구", 한국소음진동공학회 춘계학술대회, 용평, pp.69-74.
  10. VDI-Geselshaft Knstrultion und Entwicklung, VDI 2057: Assessment of the Effect of Mechanical Vibrations on Human Beings," Blatt 2, 3, 4.1-4.3, 1987.
  11. Stevens. S. S., 1986. Psychophysics : Introduction to Its Perceptual, Neural, and Social Prospects, Transactions, Inc.
  12. International Organization for Standardization, ISO 5982 : Vibration and Shock- mechanical driving point impedance of human body, 1981.

Cited by

  1. Development and application of new evaluation system for ride comfort and vibration on railway vehicles vol.19, pp.7, 2005, https://doi.org/10.1007/BF03023906