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A Parametric Study of Energy Absorbing Foams for Head Injury Prevention
KTH, School of Technology and Health (STH), Neuronic Engineering.ORCID iD: 0000-0003-0125-0784
2007 (English)In: The 20th ESV Conference Proceedings, 2007Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes a parametric study of foammaterial properties for interior car surfaces usingfinite element calculations. Two different headmodels were used for the impact simulations, aHybrid III dummy head and a biomechanical headmodel. The objective was to study the head injurycriterion (dummy) (HIC(d)), the angular velocity, theresultant acceleration and, for the human headmodels, the strain in the brain tissue and the stress inthe skull for a variation in foam material propertiessuch as stiffness, plateau stress and energyabsorption. The analysis gave at hand that the bestchoice of material properties with respect to impactusing the Hybrid III head model reached differentresults compared to an impact with the biomechanicalhead model. For a purely perpendicular impact, theHIC(d) for the head model managed to predict thestrain level in the brain quite well. Even though theHIC reached acceptable levels for both aperpendicular and oblique impact towards a 31 kg/m3EPP padding, the maximum strain in the human headmodel for an oblique impact was almost twicesuggested allowable levels. The difference in thestrain in the brain between an oblique andperpendicular impact when impacted with sameinitial velocity towards the same padding was notpredicted by the HIC(d).

Place, publisher, year, edition, pages
2007.
National Category
Other Medical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-86870OAI: oai:DiVA.org:kth-86870DiVA: diva2:501116
Conference
The 20th International Technical Conference on the Enhanced Safety of Vehicles Conference (ESV), Lyon, France, June 18–21, 2007
Note
QC 20120522Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-05-22Bibliographically approved

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Kleiven, Svein

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