An ellipsoidal model for studying response of head impacts

Heydari, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. The objective of this study was to propose a new analytical model for studying response of head impacts. Head is modeled by fluidfilled ellipsoidal shell of inconstant thickness impacted by a solid elastic sphere. Modeling the head as an ellipsoid is more realistic than modeling it as a sphere, the previous model existing in the literature [3]-[8]. In this model, the effect of Hertzian contact stiffness and local shell stiffness are combined to derive explicit equations for impact duration, the peak force transmitted to head, and the head injury criterion. One of the advantages of the model presented is sensitivity to the site of impact. A comparison between the present analytical results with the analytical data from spherical model [8] has been done to verify the validation of the present model
  5. Keywords:
  6. Ellipsoidal model ; Head impact ; Hertzian contact stiffness ; Shell stiffness ; Biological model ; Head injury ; Human ; Pathology ; Pathophysiology ; Physiology ; Statistical model ; Validation study ; Young modulus ; Biomechanics ; Craniocerebral Trauma ; Elastic Modulus ; Elasticity ; Humans ; Models, Biological ; Models, Statistical
  7. Source: Acta of Bioengineering and Biomechanics ; Volume 12, Issue 1 , 2010 , Pages 47-53 ; 1509409X (ISSN)
  8. URL: https://www.ncbi.nlm.nih.gov/pubmed/20653325