Problem Statement
A single hexahedral element with dimensions of 1 meter x 1 meter x 1 meter was used for all verifications presented in this report. The back surface () of the element was fixed in all three principal directions and special boundary conditions were enforced to ensure the element deformed in perfect shear (see Periodic Boundary Conditions). The ramp displacement shown in Figure 1 was applied to the front surface () in the X direction.
Figure 1: Plot of the ramp displacement boundary condition applied to the element's front surface.
The Newmark-beta time integration scheme, with and , was used to solve the equation of motion for the element. The theory behind the Newmark-beta method is described here. A graphical rendering of an example displacement of the element computed using Newmark's method with I-Soil is shown in Figure 2.
Figure 2: Sample deflected shape of the 1 meter x 1 meter x 1 meter element used in all tests.
The resulting strains and stresses were assumed to be constant throughout the element. Material properties and other parameters which are specific to a given test are described in their respective sections of this report.