Muscle activity on head-first compression responses of a finite element neck model

Effects of muscle activation on human neck kinematic responses under compressive loads have not been understood empirically due to the limitation of testing on in vivo test specimens. Advanced computational models can potentially provide information to improve our understanding of such responses. Th...

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Main Authors: Mohammad Nasim, Ugo Galvanetto
Format: Article
Language:English
Published: Elsevier 2023-02-01
Series:Forces in Mechanics
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666359722000919
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author Mohammad Nasim
Ugo Galvanetto
author_facet Mohammad Nasim
Ugo Galvanetto
author_sort Mohammad Nasim
collection DOAJ
description Effects of muscle activation on human neck kinematic responses under compressive loads have not been understood empirically due to the limitation of testing on in vivo test specimens. Advanced computational models can potentially provide information to improve our understanding of such responses. This study used a previously developed ligamentous finite element (FE) neck model, further integrated with muscles, fleshy tissue, and skin of the neck to predict the influence of passive and active muscles on responses to neck compression. For validation, post-mortem human subject (PMHS) and volunteer responses in frontal sled impacts were used to compare the dynamic response of the model with passive and active muscles, respectively. An objective evaluation of the validation responses suggested the ‘fair’ to ‘good’ biofidelity rating of the muscular system model. The compressive impacts, used to validate the ligamentous FE neck, were methodologically applied in the current study including the muscles with various activation states, flesh, and skin. The contribution of muscles (passive or active) resulted in an increase in the peak lower neck compression and shear forces and in a reduction in the upper neck forces on average; the role of active state dynamics of the muscles was crucial on the magnitude of the forces. Therefore, modeling of the muscles in a computational neck model may not be neglected to study a head-first compressive impact.
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spelling doaj.art-48a39c00b2cc449ba3a140a6617f67bc2023-02-20T04:09:28ZengElsevierForces in Mechanics2666-35972023-02-0110100163Muscle activity on head-first compression responses of a finite element neck modelMohammad Nasim0Ugo Galvanetto1Corresponding author.; Department Industrial Engineering, Industrial Engineering, University of Padova, Padova, PD 35133, ItalyDepartment Industrial Engineering, Industrial Engineering, University of Padova, Padova, PD 35133, ItalyEffects of muscle activation on human neck kinematic responses under compressive loads have not been understood empirically due to the limitation of testing on in vivo test specimens. Advanced computational models can potentially provide information to improve our understanding of such responses. This study used a previously developed ligamentous finite element (FE) neck model, further integrated with muscles, fleshy tissue, and skin of the neck to predict the influence of passive and active muscles on responses to neck compression. For validation, post-mortem human subject (PMHS) and volunteer responses in frontal sled impacts were used to compare the dynamic response of the model with passive and active muscles, respectively. An objective evaluation of the validation responses suggested the ‘fair’ to ‘good’ biofidelity rating of the muscular system model. The compressive impacts, used to validate the ligamentous FE neck, were methodologically applied in the current study including the muscles with various activation states, flesh, and skin. The contribution of muscles (passive or active) resulted in an increase in the peak lower neck compression and shear forces and in a reduction in the upper neck forces on average; the role of active state dynamics of the muscles was crucial on the magnitude of the forces. Therefore, modeling of the muscles in a computational neck model may not be neglected to study a head-first compressive impact.http://www.sciencedirect.com/science/article/pii/S2666359722000919Finite element modelMuscle modelingActive muscleNeck injuryCompressive impact
spellingShingle Mohammad Nasim
Ugo Galvanetto
Muscle activity on head-first compression responses of a finite element neck model
Forces in Mechanics
Finite element model
Muscle modeling
Active muscle
Neck injury
Compressive impact
title Muscle activity on head-first compression responses of a finite element neck model
title_full Muscle activity on head-first compression responses of a finite element neck model
title_fullStr Muscle activity on head-first compression responses of a finite element neck model
title_full_unstemmed Muscle activity on head-first compression responses of a finite element neck model
title_short Muscle activity on head-first compression responses of a finite element neck model
title_sort muscle activity on head first compression responses of a finite element neck model
topic Finite element model
Muscle modeling
Active muscle
Neck injury
Compressive impact
url http://www.sciencedirect.com/science/article/pii/S2666359722000919
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