LCOPER, Oper,
LCASE1, Oper2,
LCASE2,SweepANG
Performs load case operations.
OperValid operations are:
ZERO | — | Zero results portion of database
( |
SQUA | — | Square database values ( |
SQRT | — | Square root of database (absolute)
values ( |
LPRIN | — | Recalculate line element principal
stresses ( |
ADD | — | Add |
SUB | — | Subtract |
SRSS | — | Square root of the sum of the squares
of database and |
MIN | — | Compare and save in database the algebraic
minimum of database and |
MAX | — | Compare and save in database the algebraic
maximum of database and |
ABMN | — | Compare and save in database the
absolute minimum of database and |
ABMX | — | Compare and save in database the
absolute maximum of database and |
LCASE1First load case in the operation (if any). See LCNO of the LCDEF command. If ALL,
repeat operations using all selected load cases [LCSEL].
Oper2Valid operations are:
MULT | — | Multiplication: |
CPXMAX | — | This option does a phase angle sweep to calculate the maximum of derived stresses, equivalent
strain, and principal strains for a complex solution where
|
LCASE2Second load case. Used only with Oper2 operations.
SweepANGSweep angle increment in degrees for phase sweep. Used only with
Oper2 = CPXMAX. (Default = 1°)
LCOPER operates on the database and one or two load cases according to:
Database = Database
Oper(LCASE1Oper2LCASE2)
where operations Oper and Oper2 are as described above. Absolute values and
scale factors may be applied to the load cases before the operations
[LCABS, LCFACT]. If LCASE1 is not specified, only operation Oper is performed on the current database. If LCASE2 is specified, operation Oper2 will be performed before operation Oper. If LCASE2 is not
specified, operation Oper2 is ignored.
Solution items not contained [OUTRES] in either
the database or the applicable load cases will result in a null item
during a load case operation. Harmonic element data read from a result
file load case are processed at zero degrees. All load case combinations
are performed in the solution coordinate system, and the data resulting
from load case combinations are stored in the solution coordinate
system. The resultant data are then transformed to the active results
coordinate system [RSYS] when listed or displayed. Except in the cases of Oper = LPRIN, ADD, or SUB, you must use RSYS,SOLU
to list or display, and in the case of layered elements, the layer
(LAYER) must also be specified.
Use the FORCE command prior to any combination operation to correctly combine the requested force type.
If Oper2=CPXMAX, the derived stresses and strain calculation do not apply to line elements.