Importing Abaqus Files

To import a mesh from an Abaqus format file

  1. Select File and then Import.
  2. Select the file to be imported.
  3. Select Abaqus from the Files of type drop-down menu.
  4. Click Open. A new window will appear.
  5. Optionally select any appropriate specifications from this window.
  6. Click Finish.

Import Abaqus [Mesh Geometry] '<input_filename>' [Feature Angle <angle>] [Nobcs]

Including the keyword Mesh Geometry will instruct Trelis to create mesh-based geometry. This will provide the user with the ability to remesh geometric entities. If the user does not import with the Mesh Geometry flag, he will have to tell Trelis to draw the mesh after the import is done in order to view it.

The Feature Angle is used when building the surface topology to determine when to split a surface into two surfaces. If the angle between two neighboring element normals is less than Feature Angle, then the two elements will be placed on separate surfaces. If the keyword Feature Angle is not supplied, the default 135 degrees is used. For a description of importing mesh geometry see Importing Exodus II Files.

The keyword nobcs can be included if boundary conditions are not to be imported.

The Abaqus importer can import the following Abaqus file formats: flat file, part-independent, and part-dependent.

It should be noted that Trelis sometimes cannot successfully generate mesh-based geometry for complex models.  If this occurs, import the mesh without the Mesh Geometry flag, and draw the mesh to view it.

To list Abaqus cards supported by Trelis:

List Abaqus Import Cards

This command will list out all supported Abaqus cards that Trelis can interpret.

Table 1. Supported Element Types

 

1st Order

2nd Order

Triangle

S3
CAX3
CPE3

STRI65
CAX6
CPE6

Quadrilateral

S4
CAX4
CPE4

S8
CAX8
CPE8

Tetrahedron

C3D4

C3D10

Hexahedron

C3D8

C3D20

Line Element

B21
B31
T2D2
T3D2
SPRINGA
SPRING1
SPRING2

B22
B32
T2D3
T3D3

See http://www.simulia.com/ for more information on the ABAQUS file format.