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Vibration and comfort IV. Application of experimental results

Vibration and comfort IV. Application of experimental results
Vibration and comfort IV. Application of experimental results

In this conclusion to a four-part series of papers, an interpretation of the experimental data presented in the earlier three papers is given. The results obtained from the experiments are compared with those obtained by other researchers. A set of simplified approximations to the various equivalent comfort contours are defined and a general approach to the prediction of discomfort due to multi-axis, multi-input complex vibration is given.

It is shown that the results for translational vibration of a seat surface supporting the body are reasonably consistent with some previous studies. Although the contours for fore-and-aft and lateral vibration are in agreement with those in ISO 2631 (1978) there is evidence that sensitivity to vertical seat vibration above 8 Hz should be greater than defined in that standard. It is shown that the results for rotational seat vibration differ by an order of magnitude from those published by other authors but that this difference may be explained by the positions of the centres of rotation used in other studies.

It is shown that simple approximations to the median equivalent comfort contours for translational and rotational seat vibration and translational foot and back vibration may be defined by contours on acceleration frequency graph having a slope of O dB per octave (constant acceleration) and 6 dB per octave (constant velocity). For most conditions these contours fall within the 25th-75th percentile of the experimental data. The application of these contours as frequency weightings for general vibration evaluations is discussed.

0014-0139
721-739
Griffin, M.J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Parsons, K.C.
767c6599-d855-4c1b-bd5c-c224d0e3c511
Whitham, E.M.
50f3c821-687a-4a7e-8e08-b3f803bd7634
Griffin, M.J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Parsons, K.C.
767c6599-d855-4c1b-bd5c-c224d0e3c511
Whitham, E.M.
50f3c821-687a-4a7e-8e08-b3f803bd7634

Griffin, M.J., Parsons, K.C. and Whitham, E.M. (1982) Vibration and comfort IV. Application of experimental results. Ergonomics, 25 (8), 721-739. (doi:10.1080/00140138208925030).

Record type: Article

Abstract

In this conclusion to a four-part series of papers, an interpretation of the experimental data presented in the earlier three papers is given. The results obtained from the experiments are compared with those obtained by other researchers. A set of simplified approximations to the various equivalent comfort contours are defined and a general approach to the prediction of discomfort due to multi-axis, multi-input complex vibration is given.

It is shown that the results for translational vibration of a seat surface supporting the body are reasonably consistent with some previous studies. Although the contours for fore-and-aft and lateral vibration are in agreement with those in ISO 2631 (1978) there is evidence that sensitivity to vertical seat vibration above 8 Hz should be greater than defined in that standard. It is shown that the results for rotational seat vibration differ by an order of magnitude from those published by other authors but that this difference may be explained by the positions of the centres of rotation used in other studies.

It is shown that simple approximations to the median equivalent comfort contours for translational and rotational seat vibration and translational foot and back vibration may be defined by contours on acceleration frequency graph having a slope of O dB per octave (constant acceleration) and 6 dB per octave (constant velocity). For most conditions these contours fall within the 25th-75th percentile of the experimental data. The application of these contours as frequency weightings for general vibration evaluations is discussed.

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More information

Published date: August 1982
Organisations: Inst. Sound & Vibration Research

Identifiers

Local EPrints ID: 410869
URI: https://eprints.soton.ac.uk/id/eprint/410869
ISSN: 0014-0139
PURE UUID: 0c190816-3da8-448e-95ce-5c547e36e0f6
ORCID for M.J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

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Date deposited: 09 Jun 2017 09:47
Last modified: 14 Mar 2019 01:56

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Author: M.J. Griffin ORCID iD
Author: K.C. Parsons
Author: E.M. Whitham

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