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Viscoelastic Properties of Brain Tissue Under High-Rate Large Deformation

[+] Author Affiliations
Mehdi Shafieian, Kurosh Darvish

Temple University, Philadelphia, PA

Paper No. IMECE2009-11681, pp. 83-85; 3 pages
doi:10.1115/IMECE2009-11681
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 2: Biomedical and Biotechnology Engineering
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4375-8 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

The nonlinearity of brain tissue material behavior for large deformations at high strain rates was investigated. The viscoelastic properties of brain tissue under high rate ramp- and hold shear strains were determined and nonlinearity in the elastic and time dependent properties of the tissue were examined based on modeling the experimental data. The results revealed that the elastic response of brain tissue is linear from 10% to 50% shear strain, but the time dependent part of the properties in short times shows nonlinear behavior.

Copyright © 2009 by ASME

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