Abstract：
:Understanding the mechanical response of the brain to external loadings is of critical importance in investigating the pathological conditions of this tissue during injurious conditions. Such injurious loadings may occur at high rates, for example among others, during road traffic or sport accidents, falls, or due to explosions. Hence, investigating the injury mechanism and design of protective devices for the brain requires constitutive modeling of this tissue at such rates. Accordingly, this paper is aimed at critically investigating the physical background for viscohyperelastic modeling of the brain tissue with scrutinizing the elastic fields pertinent to large, time dependent deformations, and developing a fully nonlinear multimode Maxwell model that can mathematically explain such deformations. The proposed model can be calibrated using the simple monotonic uniaxial deformation of the sample extracted from the tissue, and does not require additional information from relaxation or creep experiments. The performance of the proposed model is examined using the experimental results of two different studies, which reveals a desirable agreement. The usefulness, limitations, and future developments of the proposed model are discussed in this paper.
journal_name
J Biomechjournal_title
Journal of biomechanicsauthors
Samadi-Dooki A,Voyiadjis GZdoi
10.1016/j.jbiomech.2019.01.007subject
Has Abstractpub_date
2019-02-14 00:00:00pages
211-217eissn
0021-9290issn
1873-2380pii
S0021-9290(19)30036-3journal_volume
84pub_type
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