Document Detail

Physics of IED Blast Shock Tube Simulations for mTBI Research.
MedLine Citation:
PMID:  21960984     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Shock tube experiments and simulations are conducted with a spherical gelatin filled skull-brain surrogate, in order to study the mechanisms leading to blast induced mild traumatic brain injury. A shock tube including sensor system is optimized to simulate realistic improvised explosive device blast profiles obtained from full scale field tests. The response of the skull-brain surrogate is monitored using pressure and strain measurements. Fluid-structure interaction is modeled using a combination of computational fluid dynamics (CFD) simulations for the air blast, and a finite element model for the structural response. The results help to understand the physics of wave propagation, from air blast into the skull-brain. The presence of openings on the skull and its orientation does have a strong effect on the internal pressure. A parameter study reveals that when there is an opening in the skull, the skull gives little protection and the internal pressure is fairly independent on the skull stiffness; the gelatin shear stiffness has little effect on the internal pressure. Simulations show that the presence of pressure sensors in the gelatin hardly disturbs the pressure field.
Jesus Mediavilla Varas; M Philippens; S R Meijer; A C van den Berg; P C Sibma; J L M J van Bree; D V W M de Vries
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Publication Detail:
Type:  Journal Article     Date:  2011-09-19
Journal Detail:
Title:  Frontiers in neurology     Volume:  2     ISSN:  1664-2295     ISO Abbreviation:  Front Neurol     Publication Date:  2011  
Date Detail:
Created Date:  2011-09-30     Completed Date:  2011-11-10     Revised Date:  2013-08-13    
Medline Journal Info:
Nlm Unique ID:  101546899     Medline TA:  Front Neurol     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  58     Citation Subset:  -    
Physical Protection and Survivability, Netherlands Organization for Applied Scientific Research Rijswijk, Netherlands.
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