DNSOL
DNSOL,
NODE, Item,
Comp, V1, V2,
V3, V4, V5,
V6, DataKey
Defines or modifies solution results at a node.
NODENode for which results are specified. If ALL, apply to all selected nodes (NSEL). If
NODE= P, graphical picking is enabled and all remaining command fields are ignored (valid only in the GUI). A component name may also be substituted forNODE.ItemLabel identifying results, see Table 107: DNSOL - Valid Item and Component Labels. Some items also require a component label.
CompComponent of the item. Valid component labels are shown Table 107: DNSOL - Valid Item and Component Labels below.
V1,V2,V3, . . . ,V6Value assigned to result. If zero, a zero value will be assigned. If blank, the value remains unchanged. Additional values (if any) assigned to the remaining components (in the order corresponding to the
Complist shown below for the specifiedItem(starting from the specifiedComplabel and proceeding to the right).DataKeyKey to specify which data is modified:
AUTO
—
Nodal-averaged results are used if available. Otherwise, the element-based data is used if available. (Default)
ESOL
—
Only element-based results are used. If they are not available, the command is ignored.
NAR
—
Only nodal-averaged results are used. If they are not available, the command is ignored.
Notes
DNSOL can be used only with FULL graphics activated (/GRAPHICS,FULL); it will not work correctly with PowerGraphics activated.
DNSOL defines or modifies solution results in the database at a node. For example, DNSOL,35,U,X,.001,.002,.001 assigns values 0.001, 0.002, and 0.001 to UX, UY, and UZ (respectively) for node 35. All results that are changed in the database, including the nodal degree of freedom results, are available for all subsequent operations. All data is stored in the solution coordinate system but is displayed in the results coordinate system (RSYS). Use PRNSOL to list the current results.
Data input by DNSOL is stored in temporary space and does not replace
information in the database. Therefore, data input by this command may be overwritten if a change
is made to the selected set of nodes or if an output operation acts
on a new Item.
Issuing DNSOL requires you to place the data type (stress/strain) in the element nodal records. To work around this requirement, use the DESOL command or equivalent path to add a dummy element stress/strain record.
Result items are available depending on element type; check the individual element for availability. Valid item and component labels for element results are shown in Table 107: DNSOL - Valid Item and Component Labels.
Using DNSOL with Nodal-Averaged Results
If nodal-averaged results
(OUTRES,NAR or another nodal-averaged label) are in the database, then DNSOL acts on the nodal-averaged data for
the applicable items (S, EPEL, EPPL, EPCR, EPTH, EPSW) by default. You can change this behavior
via the DataKey argument.
DNSOL behavior differs when the command acts on nodal-averaged results. The nodal-averaged results that are defined or modified will be apparent in subsequent command operations (for example PRNSOL, PLNSOL) in both full model graphics mode (/GRAPHICS,FULL) and PowerGraphics mode (/GRAPHICS,POWER). The resultant data is stored in the global Cartesian coordinate system but is displayed in the results coordinate system (RSYS). DNSOL can only be applied to nodal-averaged results if they are already in the database; otherwise, the modifications are applied to the element-based solution in temporary memory. The modified nodal-averaged results are not saved to the results file automatically. To save separate records of modified nodal-averaged results, use LCWRITE, RAPPND, or RESWRITE.
DNSOL can only modify component values
(Comp = X, Y, Z, XY, YZ, or XZ) for nodal-averaged results. If you
attempt to modify principal values using DNSOL with
DataKey = AUTO, then the modification is applied to element-based
results if they are available.
Table 107: DNSOL - Valid Item and Component Labels
| Valid Item and Component Labels for Nodal DOF Results | ||
|---|---|---|
| Item | Comp | Description |
| U | X, Y, Z | X, Y, or Z structural displacement. |
| ROT | X, Y, Z | X, Y, or Z structural rotation. |
| TEMP[1] | Temperature. | |
| PRES | Pressure. | |
| VOLT | Electric potential. | |
| MAG | Magnetic scalar potential. | |
| V | X, Y, Z | X, Y, or Z fluid velocity. |
| A | X, Y, Z | X, Y, or Z magnetic vector potential. |
| CONC | Concentration. | |
| Valid Item and Component Labels for Area and Volume Element Results | ||
|---|---|---|
| Item | Comp | Description |
| S | X, Y, Z, XY, YZ, XZ | Component stress. [2] |
| " | 1, 2, 3 | Principal stress. [3] |
| " | INT | Stress intensity. [3] |
| " | EQV | Equivalent stress. [3] |
| EPEL | X, Y, Z, XY, YZ, XZ | Component elastic strain. [2] |
| " | 1, 2, 3 | Principal elastic strain. [3] |
| " | INT | Elastic strain intensity. [3] |
| " | EQV | Elastic equivalent strain. [3] |
| EPTH | X, Y, Z, XY, YZ, XZ | Component thermal strain. [2] |
| " | 1, 2, 3 | Principal thermal strain. [3] |
| " | INT | Thermal strain intensity. [3] |
| " | EQV | Thermal equivalent strain. [3] |
| EPPL | X, Y, Z, XY, YZ, XZ | Component plastic strain. [2] |
| " | 1, 2, 3 | Principal plastic strain. [3] |
| " | INT | Plastic strain intensity. [3] |
| " | EQV | Plastic equivalent strain. [3] |
| EPCR | X, Y, Z, XY, YZ, XZ | Component creep strain. [2] |
| " | 1, 2, 3 | Principal creep strain. [3] |
| " | INT | Creep strain intensity. [3] |
| " | EQV | Creep equivalent strain. [3] |
| EPSW | Swelling strain. [2] | |
| NL | SEPL | Equivalent stress (from stress-strain curve). |
| " | SRAT | Stress state ratio. |
| " | HPRES | Hydrostatic pressure. |
| " | EPEQ | Accumulated equivalent plastic strain. |
| " | CREQ | Accumulated equivalent creep strain. |
| " | PSV | Plastic state variable. |
| " | PLWK | Plastic work/volume. |
| SEND | ELASTIC | Elastic strain energy density. (For viscoelastic materials, the stored energy.) |
| " | PLASTIC | Plastic strain energy density. |
| " | CREEP | Creep strain energy density. |
| TG | X, Y, Z, SUM | Component thermal gradient or vector sum. |
| TF | X, Y, Z, SUM | Component thermal flux or vector sum. |
| PG | X, Y, Z, SUM | Component pressure gradient or vector sum. |
| EF | X, Y, Z, SUM | Component electric field or vector sum. |
| D | X, Y, Z, SUM | Component electric flux density or vector sum. |
| H | X, Y, Z, SUM | Component magnetic field intensity or vector sum. |
| B | X, Y, Z, SUM | Component magnetic flux density or vector sum. |
| FMAG | X, Y, Z, SUM | Component electromagnetic force or vector sum. |
For SHELL131 and SHELL132 elements with KEYOPT(3) = 0 or 1, use the labels TBOT, TE2, TE3, ..., TTOP instead of TEMP.
For these component values, nodal-averaged results are modified if they are available in the results file and
DataKey= AUTO or NAR.Modifying principal values of nodal-averaged results is not supported.