Static

*Static

*Static
<Delta t_0>, <t_step>, <Delta t_min>, <Delta t_max>

This procedure is used to perform a static analysis and is used when inertia effects can be neglected. A static step can be linear or nonlinear, but time-dependent material effects (e.g. creep, swelling) are ignored. However, rate-dependent plasticity and hysteretic behavior are taken into account.

• The first line specifies the time incrementation. Therein \(\Delta t_0\) is the size of the initial time increment, \(t_{step}\) is the overall step time, \(\Delta t_{min}\) is the minimum allowed time increment and \(\Delta t_{max}\) is the maximum allowed time increment.

Static analysis can also be used to model partially or fully saturated (steady-state) fluid flow through porous media, but then requires the use of coupled elements with associated pore fluid flow properties defined. Steady-state coupled pore pressure/effective stress analysis assumes that there are no transient effects in the wetting liquid continuity equation, i.e. the steady-state solution corresponds to constant wetting liquid velocities and constant volume of wetting liquid per unit volume in the continuum.