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Brain Injury Differences in Frontal Impact Crash Using Different Simulation Strategies

In the real world crashes, brain injury is one of the leading causes of deaths. Using isolated human head finite element (FE) model to study the brain injury patterns and metrics has been a simplified methodology widely adopted, since it costs significantly lower computation resources than a whole h...

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Detalles Bibliográficos
Autores principales: Li, Dao, Ma, Chunsheng, Shen, Ming, Li, Peiyu, Zhang, Jinhuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4606094/
https://www.ncbi.nlm.nih.gov/pubmed/26495029
http://dx.doi.org/10.1155/2015/348947
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author Li, Dao
Ma, Chunsheng
Shen, Ming
Li, Peiyu
Zhang, Jinhuan
author_facet Li, Dao
Ma, Chunsheng
Shen, Ming
Li, Peiyu
Zhang, Jinhuan
author_sort Li, Dao
collection PubMed
description In the real world crashes, brain injury is one of the leading causes of deaths. Using isolated human head finite element (FE) model to study the brain injury patterns and metrics has been a simplified methodology widely adopted, since it costs significantly lower computation resources than a whole human body model does. However, the degree of precision of this simplification remains questionable. This study compared these two kinds of methods: (1) using a whole human body model carried on the sled model and (2) using an isolated head model with prescribed head motions, to study the brain injury. The distribution of the von Mises stress (VMS), maximum principal strain (MPS), and cumulative strain damage measure (CSDM) was used to compare the two methods. The results showed that the VMS of brain mainly concentrated at the lower cerebrum and occipitotemporal region close to the cerebellum. The isolated head modelling strategy predicted higher levels of MPS and CSDM 5%, while the difference is small in CSDM 10% comparison. It suggests that isolated head model may not equivalently reflect the strain levels below the 10% compared to the whole human body model.
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spelling pubmed-46060942015-10-22 Brain Injury Differences in Frontal Impact Crash Using Different Simulation Strategies Li, Dao Ma, Chunsheng Shen, Ming Li, Peiyu Zhang, Jinhuan Comput Math Methods Med Research Article In the real world crashes, brain injury is one of the leading causes of deaths. Using isolated human head finite element (FE) model to study the brain injury patterns and metrics has been a simplified methodology widely adopted, since it costs significantly lower computation resources than a whole human body model does. However, the degree of precision of this simplification remains questionable. This study compared these two kinds of methods: (1) using a whole human body model carried on the sled model and (2) using an isolated head model with prescribed head motions, to study the brain injury. The distribution of the von Mises stress (VMS), maximum principal strain (MPS), and cumulative strain damage measure (CSDM) was used to compare the two methods. The results showed that the VMS of brain mainly concentrated at the lower cerebrum and occipitotemporal region close to the cerebellum. The isolated head modelling strategy predicted higher levels of MPS and CSDM 5%, while the difference is small in CSDM 10% comparison. It suggests that isolated head model may not equivalently reflect the strain levels below the 10% compared to the whole human body model. Hindawi Publishing Corporation 2015 2015-10-01 /pmc/articles/PMC4606094/ /pubmed/26495029 http://dx.doi.org/10.1155/2015/348947 Text en Copyright © 2015 Dao Li et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Li, Dao
Ma, Chunsheng
Shen, Ming
Li, Peiyu
Zhang, Jinhuan
Brain Injury Differences in Frontal Impact Crash Using Different Simulation Strategies
title Brain Injury Differences in Frontal Impact Crash Using Different Simulation Strategies
title_full Brain Injury Differences in Frontal Impact Crash Using Different Simulation Strategies
title_fullStr Brain Injury Differences in Frontal Impact Crash Using Different Simulation Strategies
title_full_unstemmed Brain Injury Differences in Frontal Impact Crash Using Different Simulation Strategies
title_short Brain Injury Differences in Frontal Impact Crash Using Different Simulation Strategies
title_sort brain injury differences in frontal impact crash using different simulation strategies
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4606094/
https://www.ncbi.nlm.nih.gov/pubmed/26495029
http://dx.doi.org/10.1155/2015/348947
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