Characterisation of the human-seat coupling in response to vibration

Kim, E, Fard, M and Kato, K 2017, 'Characterisation of the human-seat coupling in response to vibration', Ergonomics, vol. 60, no. 8, pp. 1085-1100.

Document type: Journal Article
Collection: Journal Articles

Title Characterisation of the human-seat coupling in response to vibration
Author(s) Kim, E
Fard, M
Kato, K
Year 2017
Journal name Ergonomics
Volume number 60
Issue number 8
Start page 1085
End page 1100
Total pages 16
Publisher Taylor and Francis
Abstract Characterising the coupling between the occupant and vehicle seat is necessary to understand the transmission of vehicle seat vibration to the human body. In this study, the vibration characteristics of the human body coupled with a vehicle seat were identified in frequencies up to 100 Hz. Transmissibilities of three volunteers seated on two different vehicle seats were measured under multi-axial random vibration excitation. The results revealed that the human-seat system vibration was dominated by the human body and foam below 10 Hz. Major coupling between the human body and the vehicle seat-structure was observed in the frequency range of 10-60 Hz. There was local coupling of the system dominated by local resonances of seat frame and seat surface above 60 Hz. Moreover, the transmissibility measured on the seat surface between the human and seat foam is suggested to be a good method of capturing human-seat system resonances rather than that measured on the human body in high frequencies above 10 Hz.Practitioner Summary: The coupling characteristics of the combined human body and vehicle seat system has not yet been fully understood in frequencies of 0.5-100 Hz. This study shows the human-seat system has distinctive dynamic coupling characteristics in three different frequency regions: below 10 Hz, 10-60 Hz, and above 60 Hz.
Subject Dynamics, Vibration and Vibration Control
Keyword(s) human-seat coupling
Human-seat system
mode shape
resonance frequency
vehicle seat
DOI - identifier 10.1080/00140139.2016.1252063
Copyright notice © 2016 Informa UK Limited, trading as Taylor and Francis Group
ISSN 0014-0139
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