EDCURVE, Option, LCID, Par1, Par2
Specifies data curves for an explicit dynamic analysis.
OptionLabel identifying the option to be performed.
ADD | — | Define a data curve (default). If |
DELE | — | Delete the specified data curve ( |
LIST | — | List defined data curve ( |
PLOT | — | Plot defined data curve ( |
LCIDData curve ID number (no default). Must be a positive integer.
Par1Name of user-defined array parameter that contains the abscissa values of the curve data (e.g., time, effective plastic strain, effective strain rate, displacement, etc.).
Par2Name of user-defined array parameter that contains the ordinate
values of the curve data (e.g., damping coefficients, initial yield stress,
elastic modulus, force, etc.) corresponding to the abscissa values in Par1.
Note: If the length of Par1 and Par2 are
different, the shortest length will be used.
EDCURVE can be used to define material data curves
(e.g., stress-strain) and load data curves (force-deflection) associated with
material models in an explicit dynamics analysis. Material data specified
by this command is typically required to define a particular material behavior
(e.g., TB,HONEY), and the LCID number
is used as input on the TBDATA command.
EDCURVE can also be used to define load curves that
represent time dependent loads (force, displacement, velocity, etc.). Par1 must
contain the time values, and Par2 must contain
the corresponding load values. The LCID number
assigned to the load curve can be used as input on the EDLOAD command.
Note: You cannot update a previously defined data curve by changing
the array parameters that were input as Par1 and Par2.
The data curve definition is written to the database at the time EDCURVE is
issued. Therefore, subsequent changes to the array parameters that were used
as input on EDCURVE will not affect the load curve definition.
If you need to change the load curve definition, you must delete the load
curve (EDCURVE,DELE,LCID) and
define it again.
LCID identifies the data curve. If the value
input for LCID is the same as the ID number for
a data curve previously defined by EDCURVE, the previous
data will be overwritten. Use EDCURVE,LIST and EDCURVE,PLOT
to check existing data curves.
A starting array element number must be specified for Par1 and Par2.
The input for these fields must be a single column array parameter, or a
specific column from a multi-column array parameter. When using the GUI with
multi-column parameters, you must specify the parameter name and starting
position for Par1 and Par2 by
typing the EDCURVE command in the Input Window. This is
because only the parameter name is available through the dialog box, which
pulls in the first position of a single-column array parameter.
If you need to change a curve definition in an explicit dynamic small restart analysis, issue EDSTART,2 first (to specify the restart), then issue the EDCURVE command. The revised curve must contain the same number of points as the curve it replaces. This limitation does not apply to a full restart analysis (EDSTART,3).
This command is also valid in SOLUTION.
Distributed ANSYS Restriction This command is not supported in Distributed ANSYS.