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Transmission of yaw seat vibration to the head

Paddan, G.S. and Griffin, M.J. (2000) Transmission of yaw seat vibration to the head Journal of Sound and Vibration, 229, (5), pp. 1077-1095. (doi:10.1006/jsvi.1999.2598).

Record type: Article


The transmission of yaw-axis vibration to the heads of seated subjects has been investigated at frequencies below 5 Hz. The variability between and within subjects and the effects of backrest contact, visual environment and the position of the centre of rotation have been investigated. The subjects sat on a rigid flat seat and were exposed to random motion at a magnitude of 1·0 rad/s2r.m.s. (root-mean-square) for 2 min. Head motion was measured in six axes using a light-weight bite-bar held between the teeth. Twelve male subjects participated in a study of the effect of backrest contact and visual conditions and one male subject participated in a repeatability study. A "back-on" posture (subject's back in contact with the seat backrest) increased the frequency of maximum transmissibility from 2 to 3 Hz compared with a "back-off" posture. There was little change in transmissibility with the subjects sitting with their eyes open compared to their eyes closed. With increasing separations between a subject and the centre of rotation (at six distances from 0 to 500 mm with the subject facing outwards) there were large increases in lateral acceleration at the head.

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Published date: 2000
Additional Information: Available online 19 March 2002
Organisations: Human Sciences Group


Local EPrints ID: 10467
ISSN: 0022-460X
PURE UUID: 9b2bb08c-52f9-4543-b5bb-53a4f925a3e7

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

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Author: G.S. Paddan
Author: M.J. Griffin

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