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Effect of phase on human responses to vertical whole-body vibration and shock-analytical investigation

Matsumoto, Y. and Griffin, M.J. (2002) Effect of phase on human responses to vertical whole-body vibration and shock-analytical investigation Journal of Sound and Vibration, 250, (5), pp. 813-834. (doi:10.1006/jsvi.2001.3975).

Record type: Article

Abstract

The effect of the "phase" on human responses to vertical whole-body vibration and shock has been investigated analytically using alternative methods of predicting subjective responses (using r.m.s., VDV and various frequency weightings). Two types of phase have been investigated: the effect of the relative phase between two frequency components in the input stimulus, and the phase response of the human body. Continuous vibrations and shocks, based on half-sine and one-and-a-half-sine accelerations, each of which had two frequency components, were used as input stimuli. For the continuous vibrations, an effect of relative phase was found for the vibration dose value (VDV) when the ratio between two frequency components was three: about 12% variation in the VDV of the unweighted acceleration was possible by changing the relative phase. The effect of the phase response of the body represented by frequency weightings was most significant when the frequencies of two sinusoidal components were about 3 and 9 Hz. With shocks, the effect of relative phase was observed for all stimuli used. The variation in the r.m.s. acceleration and in the VDV caused by variations in the relative phase varied between 3 and 100%, depending on the nature of stimulus and the frequency weighting. The phase of the frequency weightings had a different effect on the r.m.s. and the VDV.

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More information

Published date: 2002
Organisations: Human Sciences Group

Identifiers

Local EPrints ID: 10605
URI: http://eprints.soton.ac.uk/id/eprint/10605
ISSN: 0022-460X
PURE UUID: d812cca8-3c41-49ba-9850-ee860fbf1f4f
ORCID for M.J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

Catalogue record

Date deposited: 08 Feb 2006
Last modified: 17 Jul 2017 17:06

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Contributors

Author: Y. Matsumoto
Author: M.J. Griffin ORCID iD

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