Table of Contents

3.5.4. ADD-MESH function

optional

Description

Once you have created the model, the next step is to define the mesh that carries the geometrical information of your physical system. SesamX allows you to define the mesh piece by piece with successive calls to the ADD-MESH function. You need to provide the nodes positions as well as the elements connectivities.

Nodes and elements are identified with their identification number (ID). There are 2 rules to keep in mind while defining mesh data:

SesamX expects you to define the nodes position in the global coordinate system.

Keywords

Name Data Type Data number Optional Default value Physical quantity
MODEL STRING 1 NO
Name of the model on which to add a mesh.

NODES branch

optional

Inside this branch, SesamX expects a list of ID and POINT keywords, as showcased in the example.

Keywords

Name Data Type Data number Optional Default value Physical quantity
ID INTEGER 1 NO
Identification number of the node.
POINT FLOAT 3 NO LENGTH
Position of the node.

ELEMENTS branch

optional

Inside this branch, the SHAPE keyword must be present only once, while a list of ID and NODES keywords is expected, as showcased in the example.

Keywords

Name Data Type Data number Optional Default value Physical quantity
SHAPE ENUM 1 NO
Shape of the elements. The possible choices are:
LN2 for 2-node line element.
TR3 for 3-node triangle element.
QD4 for 4-node quadrangle element.
TE4 for 4-node tetrahedron element.
TE10 for 10-node tetrahedron element.
WE6 for 6-node wedge element.
HE8 for 8 node hexahedron element.
ID INTEGER 1 NO
Identification number of the element.
NODES INTEGER Depending on the shape NO
Nodes id connected through the element.

Examples

In this example, a sub-mesh is created mixing the various methods available. 

ADD-MESH
  MODEL: MY_MODEL
  NODES
   - ID: 1  POINT: 0.,0.,0.
   - ID: 2  POINT: 1.,0.,0.
   - ID: 3  POINT: 0.,1.,0.
   - ID: 4  POINT: 0.,0.,1.
  ELEMENTS  
    SHAPE: QD4
    - ID: 1  NODES: 1,2,3,4
  ELEMENTS  
    SHAPE: LN2
    - ID: 2  NODES: 1,2
    - ID: 3  NODES: 4,3

See also

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References

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