Prescribed Values

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