Finite element modelling of human-seat interactions: vertical in-line and fore-and-aft cross-axis apparent mass when sitting on a rigid seat without backrest and exposed to vertical vibration
Finite element modelling of human-seat interactions: vertical in-line and fore-and-aft cross-axis apparent mass when sitting on a rigid seat without backrest and exposed to vertical vibration
Biodynamic models representing distributed human-seat interactions can assist seat design. This study sought to develop a finite element (FE) model representing the soft tissues of the body supported by seating and the vertical in-line apparent mass and the fore-and-aft cross-axis apparent mass of the seated human body during vertical vibration excitation. The model was developed with rigid parts representing the torso segments, skeletal structures (pelvis and femurs) and deformable parts representing the soft tissues of the buttocks and the thighs. The model had three vibration modes at frequencies less than 15 Hz and provided reasonable vertical in-line apparent mass and fore-and-aft cross-axis apparent mass. The model can be developed to represent dynamic interactions between the body and a seat over a seat surface (e.g. dynamic pressure distributions and variations in seat transmissibility over the seat surface).
Practitioner Summary: The three-dimensional FE model of the human body represents the in-line apparent mass and cross-axis apparent mass measured on a seat. With deformable soft tissues it can assist seat design by representing dynamic human-seat interactions, such as pressure distributions and variations in seat transmissibility over a seat surface.
apparent mass, cross-axis, biodynamic modelling, finite element model, vibration modes
1207-1219
Liu, Chi
4f085af4-e521-42dc-9d92-9b21d064797e
Qiu, Yi
ef9eae54-bdf3-4084-816a-0ecbf6a0e9da
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Liu, Chi
4f085af4-e521-42dc-9d92-9b21d064797e
Qiu, Yi
ef9eae54-bdf3-4084-816a-0ecbf6a0e9da
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Liu, Chi, Qiu, Yi and Griffin, Michael J.
(2015)
Finite element modelling of human-seat interactions: vertical in-line and fore-and-aft cross-axis apparent mass when sitting on a rigid seat without backrest and exposed to vertical vibration.
[in special issue: Whole-Body Vibration Injuries]
Ergonomics, 58 (7), .
(doi:10.1080/00140139.2015.1005164).
Abstract
Biodynamic models representing distributed human-seat interactions can assist seat design. This study sought to develop a finite element (FE) model representing the soft tissues of the body supported by seating and the vertical in-line apparent mass and the fore-and-aft cross-axis apparent mass of the seated human body during vertical vibration excitation. The model was developed with rigid parts representing the torso segments, skeletal structures (pelvis and femurs) and deformable parts representing the soft tissues of the buttocks and the thighs. The model had three vibration modes at frequencies less than 15 Hz and provided reasonable vertical in-line apparent mass and fore-and-aft cross-axis apparent mass. The model can be developed to represent dynamic interactions between the body and a seat over a seat surface (e.g. dynamic pressure distributions and variations in seat transmissibility over the seat surface).
Practitioner Summary: The three-dimensional FE model of the human body represents the in-line apparent mass and cross-axis apparent mass measured on a seat. With deformable soft tissues it can assist seat design by representing dynamic human-seat interactions, such as pressure distributions and variations in seat transmissibility over a seat surface.
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Accepted/In Press date: 29 December 2014
e-pub ahead of print date: 26 February 2015
Keywords:
apparent mass, cross-axis, biodynamic modelling, finite element model, vibration modes
Organisations:
Inst. Sound & Vibration Research
Identifiers
Local EPrints ID: 383769
URI: http://eprints.soton.ac.uk/id/eprint/383769
ISSN: 1366-5847
PURE UUID: ca348aeb-45ea-4583-b1bd-6d1db62709c8
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Date deposited: 10 Nov 2015 10:44
Last modified: 14 Mar 2024 21:48
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Author:
Chi Liu
Author:
Michael J. Griffin
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