Abaqus Keywords Reference Guide  
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*INSTANCE
Begin an instance definition.

This option is used to instance a part within an assembly. It must be used in conjunction with the *ASSEMBLY and *END INSTANCE options. If the instance is not imported from a previous analysis, the *INSTANCE option must be used in conjunction with the *PART option.

When importing a part instance from a previous analysis, the *INSTANCE option must be used in conjunction with the *IMPORT option. In an Abaqus/Explicit import analysis, you can define a new position for an imported instance and import an instance more than once.

Products: Abaqus/Standard  Abaqus/Explicit  Abaqus/CFD  Abaqus/CAE  

Type: Model data

Level: Assembly  

Abaqus/CAE: Assembly module for part instances not imported from a previous analysis; Load module for part instances imported from a previous analysis

References:

Required parameters if the instance is not imported from a previous analysis: 

NAME

Set this parameter equal to a label that will be used to refer to the instance.

PART

Set this parameter equal to the name of the part being instanced.

Required parameter if the instance is to be imported once from a previous analysis: 

INSTANCE

Set this parameter equal to the name of the instance to be imported from the previous analysis.

Required parameters if the instance is to be imported more than once from a previous analysis: 

NAME

Set this parameter equal to a new label that will be used to refer to the instance.

INSTANCE

Set this parameter equal to the old name of the instance to be imported from the previous analysis.

Optional import parameter: 

LIBRARY

Set this parameter equal to the name of the previous analysis from which the instance should be imported. The previous analysis output database (.odb) file should reside in the current (working) directory. If the LIBRARY parameter is omitted, the job name of the previous analysis must be specified on the command line using the oldjob parameter (see “Abaqus/Standard, Abaqus/Explicit, and Abaqus/CFD execution,” Section 3.2.2 of the Abaqus Analysis User's Guide). If both methods are used, the command line specification will take precedence over the LIBRARY parameter.

Data line to translate an instance: 

First (and only) line:

  1. Value of the translation to be applied in the X-direction.

  2. Value of the translation to be applied in the Y-direction.

  3. Value of the translation to be applied in the Z-direction.

Data lines to translate and/or rotate an instance: 

First line:

  1. Value of the translation to be applied in the X-direction.

  2. Value of the translation to be applied in the Y-direction.

  3. Value of the translation to be applied in the Z-direction.

Enter values of zero to apply a pure rotation.

Second line:

  1. X-coordinate of point a on the axis of rotation (see Figure 9.19–1).

  2. Y-coordinate of point a on the axis of rotation.

  3. Z-coordinate of point a on the axis of rotation.

  4. X-coordinate of point b on the axis of rotation.

  5. Y-coordinate of point b on the axis of rotation.

  6. Z-coordinate of point b on the axis of rotation.

  7. Angle of rotation about the axis a–b, in degrees.

If both translation and rotation are specified, translation is applied before rotation.

Figure 9.19–1 Rotation of an instance.