3. Operands#

3.1. Operand MACR_ELEM_DYNA#

♦ MACR_ELEM_DYNA = melem [macr_elem_dyna]

Name of the macr_elem_dyna concept that you want to print in the file.

3.2. FORMAT = “IDEAS”#

◊ FORMAT =/'IDEAS' [DEFAUT]

Allows you to specify the print format. The format “IDEAS” is taken by default. Currently only printing is carried out according to the specifications of version 5. Backward compatibility with IDEAS versions is therefore ensured.

3.2.1. Operand UNITE#

/unit [I]

This keyword allows you to define the logical printing unit in the format “IDEAS” (30 by default).

3.2.2. Operand VERSION#

This keyword allows you to define the print version in the “IDEAS” format (5 by default).

3.3. FORMAT = “MISS_3D”#

◊ FORMAT =/'MISS_3D'

The format “MISS_3D” is used by the soil dynamics code MISS3D to import structural data from the*Code_Aster* (content of the dynamic macroelement that corresponds to the terms of contribution of the structure to the impedance of the global soil-structure interaction problem). The mesh of the soil-structure interface is also printed in its local numbering and possibly the dynamic and static modes reduced to this interface.

For this format we must provide the GROUP_MA_INTERF operand and five operands are optional UNITE, SOUS_TITRE, AMOR_REDUIT, IMPR_MODE_STAT and IMPR_MODE_MECA.

3.3.1. Operand UNITE#

/unit [I]

This keyword allows you to define the logical printing unit in the “MISS_3D” format (26 by default).

3.3.2. Operand SOUS_TITRE#

Allows the user to give a name to the data transferred in the MISS3D code.

3.3.3. Operand AMOR_REDUIT#

These keywords allow you to enter a list of depreciations for dynamic modes. It is thus possible to complete the terms of the dynamic macroelement.

3.3.4. Operand GROUP_MA_INTERF#

This keyword makes it possible to define the list of groups of surface cells that make up the soil-structure interface. The coordinates of the « Nb_nodes » nodes of all the interfaces are printed, then the « Nb_elem » elements with their connectivities are printed in the local numbering of the set of interfaces (1 to « Nb_nodes »).

3.3.5. Operand IMPR_MODE_STAT#

/”NON”

This keyword possibly makes it possible (if “OUI”) to print the static modes reduced to the interface. This is necessary for the 6 rigid body modes. In this case, the macro-element is based on a dynamic interface of type CRAIGB reduced to a point with a rigid link of the interface (keyword LIAISON_SOLIDE from AFFE_CHAR_MECA [U4.44.01]).

3.3.6. Operand IMPR_MODE_MECA#

/”NON”

This keyword possibly makes it possible (if “OUI”) to print the dynamic modes reduced to the interface.

3.3.7. Operand FORMAT_R#

/”1 PE16 .9”

This keyword gives the format for printing real numbers used when printing the structure impedances that are assembled to the ground impedances in MISS3D.

3.3.8. Operands GROUP_MA_FLU_STR/GROUP_MA_FLU_SOL/GROUP_MA_SOL_SOL#

◊ GROUP_MA_FLU_SOL = gr_flusol [l_group_ma] ◊ GROUP_MA_SOL_SOL = gr_solsol [l_group_ma]

In the case of a soil-fluid-structure interaction, these keywords make it possible to complete the list of surface mesh groups consisting respectively of fluid-structure, fluid-ground and free soil interfaces.

In this case, the printing of their elements with their connectivities is completed in the local numbering of all the interfaces (1 to « NB-nodes ») (including the soil-structure interface).

3.3.9. Operand GROUP_MA_CONTROL#

This keyword makes it possible to introduce groups of point cells POI1 in order to model by Code_Aster control points in the part of the ground modeled by MISS3D. This then makes it possible to perform any post-processing on their nodes by Code_Aster operators after recovering the evolution calculated by CALC_MISS.

Therefore, for these checkpoints, this requires:

to introduce them into the mesh as isolated nodes,
to assign them a DIS_T by AFFE_MODELE modeling,
to impose blocks on them in “DX”, “DY”, “DZ” by AFFE_CHAR_MECA,

An illustrative example is given in test case ZZZZ108C.

In this case, the impression of these point elements is completed with their connectivity to a single node in the local numbering of all the interfaces (1 to « NB-nodes ») (including the nodes of the modelled control points).