*GREEN

Keyword type: step

This procedure is used to calculate the Green function due to unit forces at specific nodes in specific global directions. The Green functions are calculated for each unit force separately. The unit forces are defined by a *CLOAD card (the force value specified by the user is immaterial, a unit force is taken). For details the user is referred to Section 6.9.23.

There is one optional parameter: SOLVER. It determines the package used to solve the ensuing system of equations. The following solvers can be selected:

• PARDISO
• SPOOLES [3,4].

Default is the first solver which has been installed of the following list: PARDISO, SPOOLES. If none is installed, a Green function calculation is not possible.

First line:

• *GREEN
• Enter SOLVER, if needed, and its value.

Example:

*GREEN,SOLVER=PARDISO

defines a Green function step and selects the PARDISO solver as linear equation solver. For this to work, the PARDISO solver must have been linked with CalculiX.

Example files: green1.