**R****R**, `NSET`

, `R1`

, `R2`

, `R3`

, `R4`

, `R5`

, `R6`

**Defines the element real constants.**

`NSET`

Real constant set identification number (arbitrary).
If same as a previous set number, set is redefined. Set number relates
to that defined with the element [**REAL**]. Note that
the GUI automatically assigns this value.

The label GCN is also valid input for general
contact interactions (see Notes).

`R1`

, `R2`

, `R3`

, . . . , `R6`

Real constant values (interpreted as area, moment
of inertia, thickness, etc., as required for the particular element
type using this set), or table names for tabular input of boundary
conditions. Use **RMORE** command if more than six
real constants per set are to be input.

## Notes

Defines the element real constants. The real constants required
for an element are shown in the Input Summary of each element description
in the *Element Reference*. Constants must be input in the same order as shown
in that table. If more than the required number of element real constants
are specified in a set, only those required are used. If fewer than
the required number are specified, zero values are assumed for the
unspecified constants.

If using table inputs (SURF151, SURF152, FLUID116, CONTA171, CONTA172, CONTA173, CONTA174, and CONTA175 only), enclose the table name in % signs (e.g., `%tabname%`

).

Specify `NSET`

= GCN to define real constants for real constant sets that were
previously assigned by the **GCDEF** command (that
is, real constants used in general contact interactions).

When copying real constants to new sets, ANSYS, Inc. recommends
that you use the command input. If you do use the GUI, restrict the
real constant copy to only the first six real constants (real constants
seven and greater will be incorrect for both the master and copy set).

This command is also valid in SOLUTION.