The results neutral file system consists of eight types of files, each generated by the Results Processor. A specific Model Initialization directive as shown below controls output of each type:
| File Type | Model Initialization Directive | Default Neutral Filename |
|---|---|---|
| Grid Point Displacement Vector | DISPFILE = [d:] [path] filename[.ext] |
model output filename.DIS |
| Grid Point Force Vector | FORCFILE = [d:] [path] filename[.ext] |
model output filename.GPF |
| Element Internal Load Vector | LOADFILE = [d:] [path] filename[.ext] |
model output filename.ELF |
| Element Results | ELEMFILE = [d:] [path] filename[.ext] |
model output filename.ELS |
| Grid Point Results | GRIDFILE = [d:] [path] filename[.ext] |
model output filename.GPS |
| Femap Results | Defined by DISPFILE |
model output filename.NEU model output filename.FNO |
| NASTRAN Binary Results | Defined by DISPFILE |
model output filename.OP2 |
| NASTRAN ASCII Results | Defined by MODLOUTFILE |
model output filename.PCH |
The DISPFILE, FORCFILE, LOADFILE, ELEMFILE, and GRIDFILE directives control the filenames and whether a file is to be generated. Setting a specific directive equal to the character variable NONE will disable output of that neutral file type.
Another useful Model Initialization directive is RSLTFILETYPE which controls file type and format. When RSLTFILETYPE is set to FEMAPASCII or FEMAPBINARY, a single Femap® compatible results neutral file of the entire results database is generated. When RSLTFILETYPE is set to PATRANASCII or PATRANBINARY, multiple PATRAN 2.5 compatible results neutral files are generated. PATRAN results neutral files have a two digit subcase number added to the base of the filename to facilitate multiple subcases. When RSLTFILETYPE is set to NASTRANBINARY, a single NASTRAN Output 2 compatible results file of the entire results database is generated.
When RSLTFILETYPE is set to FEMAPBINARY and the INRCRSLTOUT directive is set to ON, a separate Femap binary results neutral file will be generated for each load increment or time step. At the end of the analysis a single neutral file with all steps will be generated.
For a detailed description of each directive see Section 2, Initialization.
Grid Point Displacement Vector
The Grid Point Displacement Vector Neutral File contains the calculated displacement vector at each grid point in the basic coordinate system. There are six columns where the first three are the x, y, and z components of translation and the last 3 are the x, y, and z components of rotation.
The ASCII formatted version has the following structure:
| Record 1: | TITLE | (A80) |
| Record 2: | NGRID, MAXGID, MAXDISP, MAXDISPGID, NDISPVECTCOL | (2I8, E15.6, 2I8) |
| Record 3: | SUBTITLE | (A80) |
| Record 4: | LABEL | (A80) |
| Record 5 to NGRID+4: | GRIDID, (DISPVECT(COL), COL=1, NDISPVECTCOL) | (I8, (5E13.7)) |
The binary unformatted version has the following structure:
| Record 1: | TITLE, NGRID, MAXGID, MAXDISP, MAXDISPGID, NDISPVECTCOL | |
| Record 2: | SUBTITLE | |
| Record 3: | LABEL | |
| Record 4 to NGRID+3: | GRIDID, (DISPVECT(COL), COL=1, NDISPVECTCOL) |
Where,
| TITLE | The set title | CHAR80 |
| SUBTITLE | The set subtitle | CHAR80 |
| LABEL | The set label | CHAR80 |
| NGRID | Number of grid points | INT4 |
| MAXGID | Largest grid point ID | INT4 |
| MAXDISP | Maximum absolute displacement | REAL4 |
| MAXDISPGID | Grid point ID where the maximum displacement occurs | INT4 |
| NDISPVECTCOL | The number of displacement vector components or columns (6) | INT4 |
| GRIDID | Grid point ID number | INT4 |
| DISPVECT | Displacement vector component values at GRIDID | REAL4 |
Grid Point Force Vector
The Grid Point Force Vector Neutral File contains the calculated internal, applied and reacted force vector at each grid point in the basic coordinate system. The internal force vector is the resultant of all internal forces at the grid point. For transient response solutions, acceleration and velocity is also included in this file.
The ASCII formatted version has the following structure:
| Record 1: | TITLE | (A80) |
| Record 2: | NGRID, MAXGID, MAXVECT, MAXVECTGID, NFORCVECTCOL | (2I8, E15.6, 2I8) |
| Record 3: | SUBTITLE | (A80) |
| Record 4: | LABEL | (A80) |
| Record 5 to NGRID+4: | GRIDID, (FORCVECT(COL), COL=1, NFORCVECTCOL) | (I8, (5E13.7)) |
The binary unformatted version has the following structure:
| Record 1: | TITLE, NGRID, MAXGID, MAXVECT, MAXVECTGID, NFORCVECTCOL | |
| Record 2: | SUBTITLE | |
| Record 3: | LABEL | |
| Record 4 to NGRID+3: | GRIDID, (FORCVECT(COL), COL=1, NFORCVECTCOL) |
Where,
| TITLE | Set title | CHAR80 |
| SUBTITLE | Set subtitle | CHAR80 |
| LABEL | Set label | CHAR80 |
| NGRID | Number of grid points | INT4 |
| MAXGID | Largest grid point ID | INT4 |
| MAXVECT | Maximum absolute vector value | REAL4 |
| MAXVECTGID | Grid point ID where the maximum value occurs | INT4 |
| NFORCVECTCOL | The number of force vector components or columns | INT4 |
| GRIDID | Grid point ID number | INT4 |
| FORCVECT | Force vector component values at GRIDID (internal force, applied force, SPC force, MPC force, velocity, and acceleration) | REAL4 |
Element Internal Load Vector
The Element Internal Load Vector Neutral File contains the calculated element internal forces at each node in the basic coordinate system.
The binary unformatted version has the following structure:
| Record 1: | TITLE, NLOADVECTCOL | |
| Record 2: | SUBTITLE | |
| Record 3: | LABEL | |
| Record 4 to NELEM+3: | ELEMID, ELEMTYPE, (LOADVECT(COL), COL=1, NLOADVECTCOL) |
Where,
| TITLE | Set title | CHAR80 |
| SUBTITLE | Set subtitle | CHAR80 |
| LABEL | Set label | CHAR80 |
| NLOADVECTCOL | The number of load vector components or columns | INT4 |
| ELEMID | Element ID number | INT4 |
| ELEMTYPE | Element type code | INT4 |
| LOADVECT | Load vector component values at ELEMID | REAL4 |
Element Results
The Element Results Neutral File contains various result types calculated at requested points on the element in a user-specified coordinate system. The coordinate system for shell element results is specified using the Case Control command SURFACE and solid element results using the Case Control command VOLUME (see SURFACE and VOLUME in Section 3, Case Control). Shell and solid elements that do not have a coordinate system defined via a SURFACE or VOLUME command will not be included. The default SURFACE is all shell elements in the element coordinate system. The default VOLUME is all solid elements in the element coordinate system. The default SURFACE/VOLUME coordinate system can be changed using the ELEMRSLTCORD parameter (see ELEMRSLTCORD in Section 5, Parameters). Composite shell element ply results will not be included in PARAM, NOCOMPS, -1 is included in the Model Input File (see NOCOMPS in Section 5, Parameters).
The ASCII formatted version has the following structure:
| Record 1: | TITLE | (A80) |
| Record 2: | NELEMVECTCOL | (I8) |
| Record 3: | SUBTITLE | (A80) |
| Record 4: | LABEL | (A80) |
| Record 5 to NELEM+4: | ELEMID, ELEMTYPE, (ELEMVECT(COL), COL=1, NELEMVECTCOL) | (2I8, /, (6E13.7)) |
The uncompressed binary unformatted version (RSLTFILECOMP directive set to OFF) has the following structure:
| Record 1: | TITLE, NELEMVECTCOL | |
| Record 2: | SUBTITLE | |
| Record 3: | LABEL | |
| Record 4 to NELEM+3: | ELEMID, ELEMTYPE, (ELEMVECT(COL), COL=1, NELEMVECTCOL) |
The compressed binary unformatted version (RSLTFILECOMP directive set to ON) has the following structure:
| Record 1: | TITLE, NELEMVECTCOL | |
| Record 2: | SUBTITLE | |
| Record 3: | LABEL | |
| Record 4 to NELEM+3: | ELEMID, ELEMTYPE, NCOL, (ELEMVECTP(COL), COL=1, NCOL), (ELEMVECTC(COL), COL=1, NCOL) |
Where,
| TITLE | Set title | CHAR80 |
| SUBTITLE | Set subtitle | CHAR80 |
| LABEL | Set label | CHAR80 |
| NELEMVECTCOL | The number of load vector components or columns | INT4 |
| ELEMID | Element ID number | INT4 |
| ELEMTYPE | Element type code | INT4 |
| ELEMVECT | Element vector component values at ELEMID | REAL4 |
| NCOL | The number of non-zero element vector component values at ELEMID | INT4 |
| ELEMVECTP | Non-zero element vector component value locations at ELEMID | INT4 |
| ELEMVECTC | Non-zero element vector component values at ELEMID | REAL4 |
Grid Point Results
The Grid Point Results Neutral File contains various result types calculated at the grid points in a user-specified coordinate system. The coordinate system for shell element results is specified using the Case Control command SURFACE and solid element results using the Case Control command VOLUME (see SURFACE and VOLUME in Section 3, Case Control). Grid points connected to shell and solid elements that do not have a coordinate system defined via a SURFACE or VOLUME command will not be included.
The ASCII formatted version has the following structure:
| Record 1: | TITLE | (A80) |
| Record 2: | NGRID, MAXGID, MAXVECT, MAXVECTGID, NGRIDVECTCOL | (2I8, E15.6, 2I8) |
| Record 3: | SUBTITLE | (A80) |
| Record 4: | LABEL | (A80) |
| Record 5 to NGRID+4: | GRIDID, (GRIDVECT(COL), COL=1, NGRIDVECTCOL) | (I8, (5E13.7)) |
The binary unformatted version has the following structure:
| Record 1: | TITLE, NGRID, MAXGID, MAXVECT, MAXVECTGID, NGRIDVECTCOL | |
| Record 2: | SUBTITLE | |
| Record 3: | LABEL | |
| Record 4 to NGRID+3: | GRIDID, (GRIDVECT(COL), COL=1, NGRIDVECTCOL) |
Where,
| TITLE | Set title | CHAR80 |
| SUBTITLE | Set subtitle | CHAR80 |
| LABEL | Set label | CHAR80 |
| NGRID | Number of grid points | INT4 |
| MAXGID | Largest grid point ID | INT4 |
| MAXVECT | Maximum absolute vector value | REAL4 |
| MAXVECTGID | Grid point ID where the maximum value occurs | INT4 |
| NGRIDVECTCOL | The number of force vector components or columns | INT4 |
| GRIDID | Grid point ID number | INT4 |
| GRIDVECT | Grid point vector component values at GRIDID | REAL4 |