Notes

If a component name is input (Cname) and the specified component definition is changed before the SOLVE command, the last definition will be used.

You can specify the load data by inputting LCID (the ID number of a previously defined load curve) or by inputting the two array parameters Par1 and Par2 (which contain time and load values, respectively). The input for Par1 and Par2 may be a single column array parameter, or a specific column from a multi-column array parameter. A starting array element number can be specified for Par1 and Par2; if none is specified, array element 1 is used by default.

EDLOAD automatically assigns a load number to each defined load. Use EDLOAD,LIST to obtain a list of loads and their corresponding load numbers. You can plot a load curve by inputting the load number on the EDPL command. The load numbers may change when loads are deleted (EDLOAD,DELE). Therefore, you should obtain a current list of load numbers (EDLOAD,LIST) before plotting a load curve.

For prescribed motion, we recommend that you specify velocity time histories instead of displacement time histories. Also, you should not specify nonzero initial displacements. A piecewise linear displacement time history may lead to discontinuous velocities and infinite accelerations.

By default, the load will be applied in the global Cartesian direction. You can define the load in a different direction by inputting a CID (coordinate system ID) value in the KEY field. The CID must be previously defined using the EDLCS command. For load labels (Lab = FX, FY, FZ, MX, MY, MZ, RBFX, RBFY, RBFZ, RBMX, RBMY, RBMZ), the load will be applied in the direction of the local coordinate system defined by EDLCS. For prescribed motion degrees of freedom labels (Lab = UX, UY, UZ, ROTX, ROTY, ROTZ, VX, VY, VZ, AX, AY, AZ, RBUX, RBUY, RBUZ, RBRX, RBRY, RBRZ, RBVX, RBVY, RBVZ, RBOX, RBOY, RBOZ), the motion will act in the direction of a vector defined by two points input on the EDLCS command. The origin and terminus ends of the vector are defined by the X1, Y1, Z1 and X2, Y2, Z2 fields, respectively, of EDLCS.

For Lab = OMGX, OMGY, and OMGZ, you may need to specify the origin location of the acceleration coordinate system [CGLOC].

When applying a temperature load (Lab = TEMP), you may also need to define a reference temperature via the TREF command. The thermal loading is defined as the difference between the applied temperature and the reference temperature. Note that EDLOAD,LIST will list only the temperature values specified on EDLOAD, not the temperature difference.

When applying loads to axisymmetric PLANE162 elements, the load may be interpreted differently depending on whether you use the area weighted or volume weighted option (KEYOPT(2)). See the PLANE162 element description in the Element Reference for details.

Use PHASE = 0 when you are using the LS-DYNA solver to conduct a transient explicit analysis only or when you are conducting a sequential implicit/explicit analysis, in which the ANSYS (implicit) resulting displacements (stored in the `drelax' file from the REXPORT command) are used to preload the explicit model [EDDRELAX,ANSYS]

Use PHASE = 1 or 2 when you need to use LS-DYNA to preload the model (as opposed to ANSYS) before running the transient portion of the analysis. PHASE = 1 applies the load initially and then immediately removes the load. As a result, the load is removed, and the structure vibrates freely. PHASE = 2 applies the load and then continues to apply the load over the course of the transient analysis, so that the transient analysis includes the effect of the initial loading and continues to account for the initial loading.

Birth and Death times, as well as the CID key are supported only for the EDLOAD labels specified with a Yes in the following table.

This command is also valid in PREP7.

Distributed ANSYS Restriction This command is not supported in Distributed ANSYS.

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