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Up: Constraints
Previous: Constraints Defined in Local
Prescribed values can be assigned to degrees of freedom by using the FEMGEN command:
PROPERTY BOUNDARY PRESCRIBE [name] part_name/ALL idof arg [loadcase_no]
| Argument | Meaning |
| name | Optional name identifier (for reference purposes). |
| part_name/ALL | Any geometry containing nodes. |
| idof | Degree of freedom to which the prescribed value applies. |
| arg | Prescribed value. |
| loadcase_no | Optional FEMGEN loadcase No. (ANSYS step), default is all loadcases. |
The following degrees of freedom can be set with this command:
| Degree of freedom name | Meaning |
| 1 or X or UX | x-translation |
| 2 or Y or UY | y-translation |
| 3 or Z or UZ | z-translation |
| 4 or RX or ROTX | x-rotation |
| 5 or RY or ROTY | y-rotation |
| 6 or RZ or ROTZ | z-rotation |
| 8 or P or PRES | pressure |
| 10 or E or VOLT | electrical potential |
| 11 or T or TEMP | temperature |
An alternative is to use the load types PROPERTY LOAD DISPLACEMENT and PROPERTY LOAD TEMPERATURE to define prescribed values for structural and thermal degrees of freedom, respectively (see Chapter 7).
Example FEMGEN Command:
PROPERTY BOUNDARY PRESCRIBE CO3 P2 1 0.0476 PROPERTY BOUNDARY PRESCRIBE CO4 P2 T 230
Corresponding ABAQUS Input Deck:
C*** C*** PRESCRIBED VALUES ... C*** C*** CO3 D, 5,UX , 0.4760000E-01 C*** CO4 D, 5,TEMP , 230.0000
Femsys Limited