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Analysis of craniocerebral injury in facial collision accidents

Considering that the Pc-Crash multibody dynamics software can reproduce the accident process accurately and obtain the collision parameters of pedestrian heads at the moment of head landing, the finite element analysis method can accurately analyze the injury of the pedestrian head when the boundary...

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Detalles Bibliográficos
Autores principales: Tian, Jie, Zhang, Chuntao, Wang, Qun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7588047/
https://www.ncbi.nlm.nih.gov/pubmed/33104724
http://dx.doi.org/10.1371/journal.pone.0240359
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author Tian, Jie
Zhang, Chuntao
Wang, Qun
author_facet Tian, Jie
Zhang, Chuntao
Wang, Qun
author_sort Tian, Jie
collection PubMed
description Considering that the Pc-Crash multibody dynamics software can reproduce the accident process accurately and obtain the collision parameters of pedestrian heads at the moment of head landing, the finite element analysis method can accurately analyze the injury of the pedestrian head when the boundary conditions are known. This paper combines the accident reconstruction method with the finite element analysis method to study the injury mechanism of pedestrian head impact on the ground in vehicle pedestrian collision accidents to provide a theoretical basis for pedestrian protection and the improvement of vehicle shapes. First, a real-life vehicle pedestrian collision is reproduced by Pc-Crash. The simulation results show that the rigid multibody model can accurately simulate the scene of the accident, then the speed and angle of the pedestrian head landing moment can be obtained at the same time. Second, the finite element model of human heads with a detailed facial structure is established and verified. Finally, the collision parameters obtained from the accident reconstruction are used as the boundary conditions to analyze the collision between the pedestrian head and the ground, and the biomechanical parameters, such as intracranial pressure, von Mises stress, shear stress and strain, can be determined. The results show that the stress wave will propagate inside and outside the skull and cause stress concentration in the skull and the brain tissue to varying degrees after the pedestrian head strikes the ground. When the stress exceeds a certain limit, it will cause different degrees of brain tissue injury.
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spelling pubmed-75880472020-10-30 Analysis of craniocerebral injury in facial collision accidents Tian, Jie Zhang, Chuntao Wang, Qun PLoS One Research Article Considering that the Pc-Crash multibody dynamics software can reproduce the accident process accurately and obtain the collision parameters of pedestrian heads at the moment of head landing, the finite element analysis method can accurately analyze the injury of the pedestrian head when the boundary conditions are known. This paper combines the accident reconstruction method with the finite element analysis method to study the injury mechanism of pedestrian head impact on the ground in vehicle pedestrian collision accidents to provide a theoretical basis for pedestrian protection and the improvement of vehicle shapes. First, a real-life vehicle pedestrian collision is reproduced by Pc-Crash. The simulation results show that the rigid multibody model can accurately simulate the scene of the accident, then the speed and angle of the pedestrian head landing moment can be obtained at the same time. Second, the finite element model of human heads with a detailed facial structure is established and verified. Finally, the collision parameters obtained from the accident reconstruction are used as the boundary conditions to analyze the collision between the pedestrian head and the ground, and the biomechanical parameters, such as intracranial pressure, von Mises stress, shear stress and strain, can be determined. The results show that the stress wave will propagate inside and outside the skull and cause stress concentration in the skull and the brain tissue to varying degrees after the pedestrian head strikes the ground. When the stress exceeds a certain limit, it will cause different degrees of brain tissue injury. Public Library of Science 2020-10-26 /pmc/articles/PMC7588047/ /pubmed/33104724 http://dx.doi.org/10.1371/journal.pone.0240359 Text en © 2020 Tian et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Tian, Jie
Zhang, Chuntao
Wang, Qun
Analysis of craniocerebral injury in facial collision accidents
title Analysis of craniocerebral injury in facial collision accidents
title_full Analysis of craniocerebral injury in facial collision accidents
title_fullStr Analysis of craniocerebral injury in facial collision accidents
title_full_unstemmed Analysis of craniocerebral injury in facial collision accidents
title_short Analysis of craniocerebral injury in facial collision accidents
title_sort analysis of craniocerebral injury in facial collision accidents
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7588047/
https://www.ncbi.nlm.nih.gov/pubmed/33104724
http://dx.doi.org/10.1371/journal.pone.0240359
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