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Response of the seated human body to whole-body vertical vibration: discomfort caused by sinusoidal vibration

Response of the seated human body to whole-body vertical vibration: discomfort caused by sinusoidal vibration
Response of the seated human body to whole-body vertical vibration: discomfort caused by sinusoidal vibration
Frequency weightings for predicting vibration discomfort assume the same frequency-dependence at all magnitudes of
vibration, whereas biodynamic studies show that the frequency-dependence of the human body depends on the magnitude of vibration. This study investigated how the frequency-dependence of vibration discomfort depends on the acceleration and the force at the subject–seat interface. Using magnitude estimation, 20 males and 20 females judged their discomfort caused by sinusoidal vertical acceleration at 13 frequencies (1–16 Hz) at magnitudes from 0.1 to 4.0 ms22 r.m.s. The frequency dependence of their equivalent comfort contours depended on the magnitude of vibration, but was less dependent on the magnitude of dynamic force than the magnitude of acceleration, consistent with the biodynamic non-linearity of the body causing some of the magnitude-dependence of equivalent comfort contours. There were significant associations between the biodynamic responses and subjective responses at all frequencies in the range 1–16 Hz.
apparent mass, biodynamics, force, frequency weighting, non-linearity, vibration magnitude
1366-5847
693-713
Zhou, Zhen
042d2983-fa7a-4c43-a1cf-475a81672c6d
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Zhou, Zhen
042d2983-fa7a-4c43-a1cf-475a81672c6d
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8

Zhou, Zhen and Griffin, Michael J. (2014) Response of the seated human body to whole-body vertical vibration: discomfort caused by sinusoidal vibration. Ergonomics, 57 (5), 693-713. (doi:10.1080/00140139.2014.898798). (PMID:24730710)

Record type: Article

Abstract

Frequency weightings for predicting vibration discomfort assume the same frequency-dependence at all magnitudes of
vibration, whereas biodynamic studies show that the frequency-dependence of the human body depends on the magnitude of vibration. This study investigated how the frequency-dependence of vibration discomfort depends on the acceleration and the force at the subject–seat interface. Using magnitude estimation, 20 males and 20 females judged their discomfort caused by sinusoidal vertical acceleration at 13 frequencies (1–16 Hz) at magnitudes from 0.1 to 4.0 ms22 r.m.s. The frequency dependence of their equivalent comfort contours depended on the magnitude of vibration, but was less dependent on the magnitude of dynamic force than the magnitude of acceleration, consistent with the biodynamic non-linearity of the body causing some of the magnitude-dependence of equivalent comfort contours. There were significant associations between the biodynamic responses and subjective responses at all frequencies in the range 1–16 Hz.

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14751 ZZ-MJG 2014 Subjective_response_to vertical_vibration - Accepted Manuscript
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14750 ZZ-MJG 2014 Biodynamic_response_to vertical_vibration - Accepted Manuscript
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More information

e-pub ahead of print date: 14 April 2014
Published date: 2014
Keywords: apparent mass, biodynamics, force, frequency weighting, non-linearity, vibration magnitude
Organisations: Human Sciences Group

Identifiers

Local EPrints ID: 372117
URI: http://eprints.soton.ac.uk/id/eprint/372117
ISSN: 1366-5847
PURE UUID: 755d123d-a844-4015-a1cd-250c0915efb5
ORCID for Michael J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

Catalogue record

Date deposited: 28 Nov 2014 13:40
Last modified: 15 Oct 2019 00:57

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Author: Zhen Zhou

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