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SUMMARY:Soft Materials: From Traumatic Brain Injuries to Retrofitting Stru
 ctures for Impact Mitigation - Tamer Elsayed (KAUST)
DTSTART:20091204T150000Z
DTEND:20091204T160000Z
UID:TALK21288@talks.cam.ac.uk
CONTACT:Katerina Ondrova
DESCRIPTION:Soft materials such as polymers and biological tissues have se
 veral engineering and biomechanical applications. These materials exhibit 
 complex mechanical characteristics and the need to accurately predict thei
 r behavior has posed a tremendous challenge for scientists and engineers. 
 \n\nIn this talk\, I shall present a seamless\, fully variational constitu
 tive model capable of capturing several complex mechanical characteristics
  exhibited by such materials. Application to traumatic brain injury (TBI) 
 under impact/acceleration loading will be presented. Clinically observed b
 rain damage is reproduced and a predictive capability of the distribution\
 , intensity\, and reversibility/irreversibility of brain tissue damage wil
 l be demonstrated. Another application to ballistic impact on a polyurea-r
 etrofitted DH36 steel plate is simulated and validated\, and computational
  capability for assessing the blast performance of metal/elastomer composi
 te shells will also be presented. \n\nFuture directions of this work may l
 ead to the formulation of head-injury criteria for medical\, governmental\
 , and industrial applications\; addressing the definition of clinical-biom
 echanical injury thresholds and tolerances\; the simulation of a wide rang
 e of injuries\, including blast-induced TBI and the effects of growing tum
 ors\; and the design and the assessment of effective protective devices\, 
 such as helmets including honeycomb materials\, polymers\, or foam padding
 .
LOCATION:Engineering Department -LR6
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