Skip to main content
. Author manuscript; available in PMC: 2015 Jun 22.
Published in final edited form as: J Biomech Eng. 2009 May;131(5):051011. doi: 10.1115/1.3113682

Figure 4.

Figure 4

Model verification for a biaxial extension test on an 8-noded hexahedral element where symmetry conditions were applied. Here, the preferred fiber orientation is aligned along the y-axis and collagen fibers are confined within the xy-plane. When the fiber concentration factor k is equal to zero (isotropy in the xy-plane), Cauchy stresses in x- and y-directions are equal, for both the analytical and finite element solutions. When the fiber concentration factor is large (k ≫ 1), the sclera behave like a transversely isotropic material. Notice the good agreement between the analytical and finite element solutions.