Journal ArticleDOI
Generation of geometry of closed human head and discretisation for finite element analysis
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The experiment used four acid dyes, three basic dyes and two solvents, ethanol and toluene to create spots that cured under pressure, preventing bubbles appearing in the spots as a result of the contraction of the rubber during cure.Abstract:
The experiment used four acid dyes, three basic dyes and two solvents, ethanol and toluene. The procedure was to stir a very small quantity 1 mm 3) o f powdered dye into 2 ml of the selected solvent and then to mix this with 2 ml o f D e 3140. The mixture was deposited as 'spots,' about 1.5 cm in diameter, on to clean microscope slides, which were then cured in moist air in a pressure chamber at 2 bar. Curing under pressure prevents bubbles appearing in the spots as a result of the contraction of the rubber during cure. The spot colours noted were those seen after 24 h; in most cases, however, the colour developed within a few minutes and was stable therafter, 48 h were allowed for cure.read more
Citations
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Journal ArticleDOI
Influence of FE model variability in predicting brain motion and intracranial pressure changes in head impact simulations
TJ Horgan,Michael D. Gilchrist +1 more
TL;DR: The results indicate that, despite the fundamental differences between these six model formulations, the comparisons with the experimentally measured pressures and relative displacements were largely consistent and in good agreement and may prove useful for those attempting to model real life accident scenarios.
Finite Element Modeling of the Human Head
TL;DR: In this paper, the authors defined the dimension of head injuries in Sweden over a longer period and presented a finite element (FE) model of the human head which can be used to diagnose head injuries.
Journal ArticleDOI
Motorcycle Helmet Part I. Biomechanics and Computational Issues.
F.M. Shuaeib,Abdel Magid Hamouda,Abdel Magid Hamouda,R.S. Radin Umar,M.M. Hamdan,M.S.J. Hashmi +5 more
TL;DR: In this article, the current status related to motorcycle helmet crash studies from biomechanics and computational point of view is reviewed, and the importance of motorcycle helmet performance on statistical background was reviewed.
Journal ArticleDOI
Importance of partitioning membranes of the brain and the influence of the neck in head injury modelling
S. Kumaresan,S. Radhakrishnan +1 more
TL;DR: Three-dimensional finite-element analysis is carried out to investigate the influence of the partitioning membranes of the brain and the neck in head injury analysis through free-vibration analysis and transient analysis.
Journal ArticleDOI
Finite element analysis of brain contusion: an indirect impact study.
TL;DR: Shear strain theory appears to better account for the clinical findings in head injury when the head is subjected to an indirect impact, and predictions of cavitation theory that a pressure gradient develops in the brain during indirect impact are supported.
References
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Human head dynamic response to side impact by finite element modeling
TL;DR: In this article, the dynamic response of the human head to side impact was studied by 2-dimensional finite element modeling, and three models were formulated in this study: an axisymmetric model, a single-layered spherical shell filled with an inviscid fluid, and a plane strain model of a coronal section of the head.
Journal ArticleDOI
Human Head Dynamic Response to Side Impact by Finite Element Modeling
TL;DR: The purpose of this study was to determine the effects of the membranes and that of the mechanical properties of the skull, brain, and membrane on the dynamic response of the brain during side impact, and to compare the pressure distributions from the plane strain model with the axisymmetric model.
Journal ArticleDOI
Parametric study of head response by finite element modeling
TL;DR: The results revealed that the load spatial distribution strongly influenced skull and, consequently, the load required to initiate skull fracture, and the other parameters produced small effects on the models' responses.
Proceedings ArticleDOI
Definition and development of a crash dummy head
TL;DR: In this paper, the GM Research skull and head geometry models are used to design a crash test dummy head. The head design concept is compatible with current head injury assessment procedures, and the configuration is based on the head geometry model.
Journal ArticleDOI
Elastic Analysis of a Skull
Claude H. Hardy,Pedro V. Marcal +1 more
TL;DR: In this article, a finite element elastic analysis is made of a skull and the skull is idealized with a doubly curved and arbitrary triangular shell element and the importance of using a composite material through the thickness of the shell was established.