Document Detail

Effects of head size and morphology on dynamic responses to impact loading.
MedLine Citation:
PMID:  17634762     Owner:  NLM     Status:  MEDLINE    
Head responses subjected to impact loading are studied using the finite element method. The dynamic responses of the stress, strain, strain energy density and the intracranial pressure govern the intracranial tissues and skull material failures, and therefore, the traumatic injuries. The objectivity and consistency of the prevailing head traumatic injury criteria, i.e., the energy absorption, the gravity centre acceleration and the head injury criterion (HIC), are examined with regard to the head dynamic responses. In particular, the structural intensity (STI) (the vector representation of energy flow rate) is calculated and discussed. From the simulations, the STI, instead of the gravity centre acceleration, the HIC and the energy absorption criteria, is found to be consistent with the dynamic response quantities. The different local skull curvatures at impact have a marginal effect whereas the locations of the impact loadings have significant effects on the dynamics responses or the head injury. The STI also shows the failure patterns.
Fang Wang; Heow Pueh Lee; Chun Lu
Publication Detail:
Type:  Journal Article     Date:  2007-07-17
Journal Detail:
Title:  Medical & biological engineering & computing     Volume:  45     ISSN:  0140-0118     ISO Abbreviation:  Med Biol Eng Comput     Publication Date:  2007 Aug 
Date Detail:
Created Date:  2007-08-01     Completed Date:  2008-01-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7704869     Medline TA:  Med Biol Eng Comput     Country:  United States    
Other Details:
Languages:  eng     Pagination:  747-57     Citation Subset:  IM    
Institute of High Performance Computing, 1 Science Park Road, #01-01 The Capricorn, Singapore Science Park II, Singapore, Singapore 117528.
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MeSH Terms
Craniocerebral Trauma / pathology*,  physiopathology
Finite Element Analysis
Head / pathology*,  physiopathology
Models, Anatomic
Skull / physiopathology
Stress, Mechanical

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