Solver Settings for Static Strength Calculation

Solver settings for static strength calculation are made from the Command Panel by selecting (Mode - Calculation Settings, Calculation Settings - Static, Static - Solver).

Fig. 1 - Command panel, solver settings for static calculation

First, in the drop-down list choose a method for solving a system of linear algebraic equations (SLA): direct (LU-decomposition) or iterative; by default, the method is selected automatically. If the iterative method is selected, the Command Panel acquires the following view:

Fig. 2 - Command panel, iterative solver settings

Convergence of iterative methods of solving SLOUGH (one of they are the Uzava method) depends on the conditionality of the stiffness matrix the system. To improve convergence , you can use preconditioning:

with automatic method selection;
diagonal (according to Jacobi);
ILU0 - incomplete LU decomposition with zero filling level;
ILUT - incomplete LU decomposition with constraints;
ILU2 - incomplete LU decomposition with the 2nd level of filling.

For the iterative method, it is necessary to set the groups in the input windows Iterative solver parameters convergence parameters of the solution or leave the default values.

Click Apply.

Click Start Calculation.