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Predicting the discomfort caused by simultaneous vertical and fore-and-aft whole-body vibration

Predicting the discomfort caused by simultaneous vertical and fore-and-aft whole-body vibration
Predicting the discomfort caused by simultaneous vertical and fore-and-aft whole-body vibration

In two experiments, subjects adjusted combinations of vertical and fore-and-aft whole-body sinusoidal vibration (frequencies in the range 2. 5-10 Hz) so that their discomfort was equivalent to that produced by a reference motion. The aim was to find the best procedure for predicting the discomfort caused by simultaneous vertical and fore-and-aft vibration. The procedure was assumed to be of the form (V**n plus H**n)**1**/**n, where V and H represented the discomfort that would have been caused by each of the vertical and horizontal components if they had occurred separately. The first experiment, where the vibration in each axis was at the same frequency and the ratio of V to H was varied gave an optimum value of 2. 07 for the exponent n. Root-sums-of-squares was generally the best procedure in the second experiment where the vibration in both axes was not at the same frequency, although there was a significant difference between the predicted and actual discomfort for some combinations of frequencies.

0022-460X
141-156
Fairley, T.E.
cbbd311d-7b6c-45cd-8660-a8b09b2b83ec
Griffin, M.J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Fairley, T.E.
cbbd311d-7b6c-45cd-8660-a8b09b2b83ec
Griffin, M.J.
24112494-9774-40cb-91b7-5b4afe3c41b8

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), 141-156. (doi:10.1016/S0022-460X(88)81410-X).

Record type: Article

Abstract

In two experiments, subjects adjusted combinations of vertical and fore-and-aft whole-body sinusoidal vibration (frequencies in the range 2. 5-10 Hz) so that their discomfort was equivalent to that produced by a reference motion. The aim was to find the best procedure for predicting the discomfort caused by simultaneous vertical and fore-and-aft vibration. The procedure was assumed to be of the form (V**n plus H**n)**1**/**n, where V and H represented the discomfort that would have been caused by each of the vertical and horizontal components if they had occurred separately. The first experiment, where the vibration in each axis was at the same frequency and the ratio of V to H was varied gave an optimum value of 2. 07 for the exponent n. Root-sums-of-squares was generally the best procedure in the second experiment where the vibration in both axes was not at the same frequency, although there was a significant difference between the predicted and actual discomfort for some combinations of frequencies.

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Published date: 8 July 1988

Identifiers

Local EPrints ID: 413080
URI: https://eprints.soton.ac.uk/id/eprint/413080
ISSN: 0022-460X
PURE UUID: 01a037b7-a0f1-4f29-81f6-d0d8db0f9572
ORCID for M.J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

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Date deposited: 14 Aug 2017 16:31
Last modified: 14 Mar 2019 01:56

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