A finite element mesh can be saved in a generic format defined by SMS, called the 2dm format. In addition, the Generic Model interface in the Mesh module uses this format to save a template definition, in addition to model parameter, material property, and boundary condition assignments for a specific simulation. When a .2dm file is opened, the Current Numerical Model changes to the Generic Mesh Interface. To save a numerical model definition as a template file, you should first set up the template and save a .2dm file before any nodes are created.
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Card Type |
MESH2D |
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Description |
Identifies the file as a 2d mesh file. Must be the first line of the file. |
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Required |
YES |
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Card Type |
ND |
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Description |
Defines the ID and location for each node of the mesh. |
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Required |
NO |
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Format |
ND id x y z |
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Sample |
ND 1 7.75e+005 1.10e+005 5.00e-001 |
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Field |
Variable |
Value |
Description |
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1 |
id |
+ |
The ID of the node. |
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2-4 |
x,y,z |
± |
The x, y, and z coordinates of the point. |
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Card Type |
E3T |
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Description |
Identifies a 3-noded triangular element. |
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Required |
NO |
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Format |
E3T id n1 n2 n3 matid |
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Sample |
E3T 1 1 2 3 1 |
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Field |
Variable |
Value |
Description |
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1 |
id |
+ |
The ID of the element. |
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2-4 |
n1-n3 |
+ |
The ID's of nodes in the element. |
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5 |
matid |
+ |
The ID of the material assigned to the element. |
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Card Type |
E4Q |
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Description |
Identifies a 4-noded quadrilateral element. |
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Required |
NO |
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Format |
E4Q id n1 n2 n3 n4 matid |
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Sample |
E4Q 1 1 2 3 4 1 |
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Field |
Variable |
Value |
Description |
|
1 |
id |
+ |
The ID of the element. |
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2-5 |
n1-n4 |
+ |
The ID's of nodes in the element. |
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6 |
matid |
+ |
The ID of the material assigned to the element. |
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Card Type |
E6T |
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Description |
Identifies a 6-noded triangular element. |
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Required |
NO |
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Format |
E6T id n1 n2 n3 n4 n5 n6 matid |
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Sample |
E6T 1 1 2 3 1 |
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Field |
Variable |
Value |
Description |
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1 |
id |
+ |
The ID of the element. |
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2-7 |
n1-n6 |
+ |
The ID's of nodes in the element. |
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8 |
matid |
+ |
The ID of the material assigned to the element. |
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Card Type |
E8Q |
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Description |
Identifies an 8-noded quadrilateral element. |
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Required |
NO |
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Format |
E8Q id n1 n2 n3 n4 n5 n6 n7 n8 matid |
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Sample |
E8Q 1 1 2 3 4 5 6 7 8 1 |
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Field |
Variable |
Value |
Description |
|
1 |
id |
+ |
The ID of the element. |
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2-9 |
n1-n8 |
+ |
The ID's of nodes in the element. |
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10 |
matid |
+ |
The ID of the material assigned to the element. |
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Card Type |
E9Q |
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Description |
Identifies a 9-noded quadrilateral element. |
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Required |
NO |
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Format |
E9Q id n1 n2 n3 n4 n5 n6 n7 n8 n9 matid |
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Sample |
E9Q 1 1 2 3 4 5 6 7 8 9 1 |
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Field |
Variable |
Value |
Description |
|
1 |
id |
+ |
The ID of the element. |
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2-10 |
n1-n9 |
+ |
The ID's of nodes in the element. |
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11 |
matid |
+ |
The ID of the material assigned to the element. |
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Card Type |
NS |
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Description |
Identifies a nodestring. |
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Required |
NO |
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Format |
NS n1 n2 n3 ... -nn |
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Sample |
NS 1 2 3 4 5 6 |
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Field |
Variable |
Value |
Description |
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all |
nx |
+ |
The ID's of nodes in the nodestring. The last node is written as a negative number, thus signaling the nodestring's end. Multiple NS cards can be used for a single nodestring. |
The template data section of a 2dm file is described in the generic model template section. The specific model control parameters, boundary conditions and material properties for a simulation are also described in their own sections.