2. Reference solution

2.1. Calculation method

The aim is to calculate the response of a solid block subjected to harmonic pressure on its upper face. The reference solution is obtained by performing a transient response calculation on a physical basis using the Newmark integration scheme with the parameters \(\mathit{alpha}\mathrm{=}0.25\) and \(\mathit{delta}\mathrm{=}0.5\).

2.2. Reference quantities and results

It is proposed to test the following quantities:

• Move next \(x\) to coordinate point \((0.1575,0.125,0)\)

• Stress and deformation at the Gauss point of a cell containing the coordinate node \((0.3325,0.05,0)\)

• Stress and deformation at coordinate node \((0.3325,0.05,0)\)

2.3. Uncertainty about the solution

It is considered that the regime is established after 90 periods of excitement. The reference values used are those recorded over the 98th and 99th periods of the transitory response.