... provides novel biomechanical data that can be used in the development of rate dependent material models and the identification of tissue-level tolerance values, which are critical to the validation of finite element models used to assess injury risk. biomechanics liver viscoelastic failure stress...

..., we suggest a Poisson's ratio of 0.125 to be used in biphasic models of the intervertebral disk. Poisson's ratio intervertebral disk nucleus pulposus poroelastic viscoelastic The nucleus pulposus is the hydrated central region of the intervertebral disk (IVD) and is composed...

... protocol [ 2 , 3 ]. For the shear study, no differences were found between elastic or viscoelastic parameters. Although it did not statistically differ, the static compressive stress was considerably less for the previously tested tissue; since this is a compressive parameter, this discrepancy...

...Shruti Pai; William R. Ledoux Accurate quantification of soft tissue properties, specifically the stress relaxation behavior of viscoelastic tissues such as plantar tissue, requires precise testing under physiologically relevant loading. However, limitations of testing equipment often result...

...Gregory C. Thomas; Anna Asanbaeva; Pasquale Vena; Robert L. Sah; Stephen M. Klisch A constituent based nonlinear viscoelastic (VE) model was modified from a previous study ( Vena, et al., 2006, “A Constituent-Based Model for the Nonlinear Viscoelastic Behavior of Ligaments,” J. Biomech. Eng., 128...

... decreases with time if the artery is cut from the loaded state, while it increases if the cut is made from the no-load state due to viscoelasticity. In both cases, the opening angle approaches the same value in 3 h . This implies that the characteristic relaxation time is about 10,000 s . Here, the creep...

... the motion of the IVD under axial cyclic loading as well as maintain computational efficiency for use in future musculoskeletal spine models. Several studies have successfully modeled the creep characteristics of the IVD using the three-parameter viscoelastic standard linear solid (SLS) model. However, when...

...Mallika Sridhar; Jie Liu; Michael F. Insana Viscoelastic properties of soft tissues and hydropolymers depend on the strength of molecular bonding forces connecting the polymer matrix and surrounding fluids. The basis for diagnostic imaging is that disease processes alter molecular-scale bonding...

...Xinguo Ning; Qiliang Zhu; Yoram Lanir; Susan S. Margulies The objective of this study was to define the constitutive response of brainstem undergoing finite shear deformation. Brainstem was characterized as a transversely isotropic viscoelastic material and the material model was formulated...