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An assessment of the realism of digital human manikins used for simulation in ergonomics

Article dans une revue avec comité de lecture
Author
NÉROT, Agathe
99538 Laboratoire de biomécanique [LBM]
222174 Laboratoire de Biomécanique et Mécanique des Chocs [LBMC UMR T9406]
ccSKALLI, Wafa
99538 Laboratoire de biomécanique [LBM]
WANG, Xuguang
222174 Laboratoire de Biomécanique et Mécanique des Chocs [LBMC UMR T9406]

URI
http://hdl.handle.net/10985/10321
DOI
10.1080/00140139.2015.1038306
Date
2015
Journal
Ergonomics

Abstract

In this study, the accuracy of the joint centres of the manikins generated by RAMSIS and Human Builder (HB), two digital human modelling (DHM) systems widely used in industry for virtual ergonomics simulation, was investigated. Eighteen variously sized females and males were generated from external anthropometric dimensions and six joint centres (knee, hip and four spine joints) were compared with their anatomic locations obtained from the three-dimensional reconstructed bones from a low-dose X-ray system. Both RAMSIS and HB could correctly reproduce external anthropometric dimensions, while the estimation of internal joint centres location presented an average error of 27.6mm for HB and 38.3mm for RAMSIS. Differences between both manikins showed that a more realistic kinematic linkage led to better accuracy in joint location. This study opens the way to further research on the relationship between the external body geometry and internal skeleton in order to improve the realism of the internal skeleton of DHMs, especially for a biomechanical analysis requiring information of joint load and muscle force estimation.

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