RMMSELECT, Nmode, Method, Dmin, Dmax
Selects modes for the ROM method.
NmodeTotal number of modes to be selected
MethodMethod for mode selection. Valid methods are:
TMOD | — | Automated selection using a test load. TMOD must be enclosed in single quotes. |
NMOD | — | First |
DminLower bound for total deflection range.
DmaxUpper bound for total deflection range.
Select pertinent modes for use in a ROM. Pertinent mode selection may
be enhanced by using the deflection state of the structure representative
of the operating nature of the device (Method =
TMOD). A static analysis with an applied Test Load may be used. The test
load displacements must be extracted at the neutral plane of the device (if
the device is stress-stiffened), or at any plane of the device (non-stress-stiffened).
A node component "NEUN" must be defined for the plane of nodes,
and the displacements extracted using the RMNDISP command
prior to issuing this command. If Method = NMOD,
use the first Nmode eigenmodes to select the pertinent
modes for the ROM tool. Only those modes are selected that act in the operating
direction of the structure [RMANL].
Distributed ANSYS Restriction This command is not supported in Distributed ANSYS.