Effects of Dynamic Brain Response under Different Setting of Skull-Brain Interface and Mesh Density Division of Cerebrospinal Fluid
10.16156/j.1004-7220.2019.06.04
- VernacularTitle:颅脑接触面的不同设置以及脑脊液单元划分密度对脑组织动态响应的影响
- Author:
Bei LI
1
;
Shijie RUAN
1
;
Haiyan LI
1
;
Shihai CUI
1
;
Lijuan HE
1
;
Wenle LV
1
Author Information
1. Center for Injury Biomechanics and Vehicle Safety Engineering, Tianjin University of Science and Technology
- Publication Type:Journal Article
- Keywords:
cerebrospinal fluid （CSF）;
contact interface;
head finite element model
- From:
Journal of Medical Biomechanics
2019;34(6):E586-E593
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effects of different skull-brain interfaces and mesh density of the cerebrospinal fluid (CSF) on dynamic responses of the brain. Methods The impact kinematics on cadaver head under rotation and translation impacts were reconstructed based on the 50th percentile adult head finite element model. The interfaces between skull and CSF, CSF and brain were modeled with different types of interfaces, which were set as sharing nodes, tied, frictionless sliding, so as to investigate the effect of different interface types on dynamic responses of the brain. Then, the interfaces between CSF, skull and brain were set as sharing nodes, while CSF was divided into single-layer and tri-layer of hexahedral element with the constant thickness of CSF, to study influences of CSF with different mesh density layers on dynamic responses of the brain. Results The intracranial pressure was highly sensitive to the interface types, while the brain response seemed to be relatively insensitive to the variation in CSF layers. Conclusions The research findings provide theoretical references for the construction of CSF and the selection of skull-brain contact interface of the head finite element model.
