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Mechanical characterization of brain tissue in compression

Shafiee, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1115/DETC2016-59019
  3. Publisher: American Society of Mechanical Engineers (ASME)
  4. Abstract:
  5. The biomechanical behavior of brain tissue is needed for predicting the traumatic brain injury (TBI). Each year over 1.5 million people sustain a TBI in the United States. The appropriate coefficients for modeling the injury prediction can be evaluated using experimental data. In the present paper, using an experimental setup on bovine brain tissue, unconfined compression tests at quasi-static strain rates of ϵ 0.0004s-1, 0.008s-1 and 0.4s-1 combined with a stress relaxation test under unconfined uniaxial compression with ϵ 0.67s-1 ramp rate are performed. The fitted viscohyperelastic parameters were utilized by using obtained stressstrain curves. The finite element analysis (FEA) is validated using experimental data
  6. Keywords:
  7. Compression testing ; Design ; Finite element method ; Strain rate ; Stress relaxation ; Tissue ; Biomechanical behavior ; Mechanical characterizations ; Quasi-static strain rates ; Stress relaxation tests ; Traumatic Brain Injuries ; Unconfined compression tests ; Uni-axial compression ; Visco-hyperelastic ; Brain
  8. Source: ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, 21 August 2016 through 24 August 2016 ; Volume 3 , 2016 ; 9780791850138 (ISBN)
  9. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2591749