3. Keyword RESU#

This factor keyword allows you to specify the results to be printed and the format in which you want to print them.

3.1. Operand MAILLAGE#

This operand allows you to choose the mesh that you want to print. Simultaneous printing of meshes and fields is not possible

3.2. Selecting data to be printed#

Calculated field values are stored in data structures called quantity fields. These quantity fields can be directly accessible (concept CHAM_GD) or can be found in a data structure combining several quantity fields (concept result).

A size field is a data structure that allows you to store fields defined at the nodes (cham_no_) or fields defined by elements (cham_elem_*). For fields by elements, we distinguish between fields defined at the nodes of the elements and fields defined at the points of GAUSS of the elements.

  • A resulting concept consists of one or more quantity fields. For example, at each calculation step, the displacement quantity field is stored in the result data structure. This structure is therefore a second-order matrix structure, one index of which is, for example, the list of calculation times and the other the set of calculated fields (displacements, constraints, deformations,…).

In this case, a quantity field is accessed by specifying a value of an access variable (order number, instant, frequency, mode number,…) and a field name (“DEPL”, “SIGM_ELNO”,…). There are several types of result concept: evol_elas, evol_noli, mode_meca,… Each corresponds to a list of fields and a list of legal access variables.

Given the structure of the result data, it is easy to understand that the printing possibilities that are available are those of the size fields, complemented by specific possibilities.

Attention

You cannot print in the same file the MAILLAGEet the RESULTAT/CHAM_GD, GMSH does not know how to read such a file. The command therefore stops if both keywords are present.

3.2.1. Operand CHAM_GD#

For CHAM_NO, the components of the field at the nodes are split into a vector field combining the components DX, DY, DZ and into as many scalar fields as there are other components.

Exam: In the case of a field with nodes of magnitude DEPL and whose modeling is of the beam type, we write:

  • 1 vector field (combining all the translation components),

  • 3 scalar fields (one field per degree of rotation).

For CHAM_ELEM, we only print fields by elements at the nodes (_ ELNO_). An element-wise field at the nodes is split into as many scalar fields as there are components.

Note

When writing a result in the GMSH format, the field title, which appears in GMSH, consists of the name of the Aster result + the name of the field + the component.

Example: RESU_DEPL_DX: the component “DX” of the field “ DEPL “of the result “ RESU “

If you write a derived field, you intercalate the name of the sensitive parameter from which you derive, between the name of the result and the name of the field.

Example: RESU_PS1_DEPL_DX: the derivative with respect to “ PS1 “ “* of the component “dx’of the field “ DEPL “of the result “ “” RESU “ . *

3.2.2. Operand RESULTAT#

The RESULTAT operand allows you to print the fields contained in a result concept. For example, you can choose to print only certain fields (see the keyword: NOM_CHAM).

The result concept is written magnitude field by magnitude field as described in [§4.1].