Output is provided with the commands *NODE FILE and *EL FILE in the .frd file (ASCII), with the commands *NODE OUTPUT and *ELEMENT OUTPUT in the .frd file (binary) and with the commands *NODE PRINT and *EL PRINT in the .dat file (ASCII). Binary .frd files are much shorter and can be faster read by CalculiX GraphiX. Nodal variables (selected by the *NODE FILE, *NODE OUTPUT and *NODE PRINT keywords) are always stored at the nodes. Element variables (selected by the *EL FILE, *ELEMENT OUTPUT and *ELEMENT PRINT keywords) are stored at the integration points in the .dat file and at the nodes in the .frd file. Notice that element variables are more accurate at the integration points. The values at the nodes are extrapolated values and consequently less accurate. For example, the von Mises stress and the equivalent plastic strain at the integration points have to lie on the stress-strain curve defined by the user underneath the *PLASTIC card, the extrapolated values at the nodes do not have to.

In fluid networks interpolation is used to calculate the nodal values at nodes in which they are not defined. Indeed, due to the structure of a network element the total temperature, the static temperature and the total pressure are determined at the end nodes, whereas the mass flow is calculated at the middle nodes. Therefore, to guarantee a continuous representation in the .frd file the values of the total temperature, the static temperature and the total pressure at the middle nodes are interpolated from their end node values and the end node values of the mass flow are determined from the neighboring mid-node values. This is not done for .dat file values (missing values are in that case zero).

A major different between the FILE and PRINT requests is that the PRINT requests HAVE TO be accompanied by a set name. Consequently, the output can be limited to a few nodes or elements. The output in the .frd file can but does not have to be restricted to subsets. If no node set is selected by using the NSET parameter (both for nodal and element values, since output in the .frd file is always at the nodes) output is for the complete model.

The following output variables are available:

variable | meaning | type | .frd file | .dat file |

CDIS | relative contact displacements | nodal | CONTACT | x |

CONTACTI | x | |||

PEEQ | equivalent plastic strain | int.point | PE | x |

CELS | contact energy | nodal | CELS | x |

CF | total contact force | surface | x | |

CFN | total normal contact force | surface | x | |

CFS | total shear contact force | surface | x | |

CNUM | total number of contact elements | model | x | |

COORD | coordinates | int.point | x | |

CP | pressure coefficient in a compressible | nodal | CP3DF | x |

3D fluid | ||||

CSTR | contact stress | nodal | CONTACT | x |

CONTACTI | x | |||

DEPF | fluid depth in 3D shallow water calculations | nodal | DISP | |

DEPT | fluid depth in a channel network | nodal | DEPTH | |

DTF | fluid time increment in 3D fluids | nodal | DTIMF | |

DRAG | stress on surface | surface | x | |

E | Lagrange strain | int.point | TOSTRAIN | x |

TOSTRAII | x | |||

EBHE | heating power due to induction | elem | x | |

ECD | electric current density | int.point | CURR | |

ELKE | kinetic energy | element | x | |

ELSE | internal energy | element | x | |

EMAS | mass and mass moments of inertia | element | x | |

EMFB | magnetic field | int.point | EMFB | |

EMFE | electric field | int.point | EMFE | |

ENER | internal energy density | int.point | ENER | x |

ERR | error estimator for the worst principal stress | int.point | ERROR | |

ERRORI | ||||

EVOL | volume | element | x | |

FLUX | flux through surface | surface | x | |

HCRI | critical depth in a channel network | nodal | HCRIT | |

HER | error estimator for the temperature | int.point | HERROR | |

HERRORI | ||||

HFL | heat flux in a structure | int.point | FLUX | x |

HFLF | heat flux in a 3D fluid | int.point | FLUX | x |

KEQ | stress intensity factor | nodal | CT3D-MIS | |

MACH | Mach number in a compressible 3D fluid | nodal | M3DF | x |

MAXE | worst principal strain | int.point | MSTRAIN | |

in cyclic symmetric | ||||

frequency calculations | ||||

MAXS | worst principal stress | int.point | MSTRESS | |

in cyclic symmetric | ||||

frequency calculations | ||||

MAXU | worst displacement | nodal | MDISP | |

orthogonal to a given vector | ||||

in cyclic symmetric | ||||

frequency calculations | ||||

ME | mechanical strain | int.point | MESTRAIN | x |

MESTRAII | x | |||

MF | mass flow in a network | nodal | MAFLOW | x |

NT | structural temperature | nodal | NDTEMP | x |

total temperature in a network | ||||

PCON | amplitude and phase of the relative contact | nodal | PCONTAC | |

displacements and contact stresses | ||||

PEEQ | equivalent plastic strain | int.point | PE | x |

PHS | magnitude and phase | int.point | PSTRESS | |

of stress | ||||

PN | network pressure | nodal | x | |

(generic term for any of the above) | ||||

PNT | magnitude and phase | nodal | PNDTEMP | |

of temperature | ||||

POT | electric potential | nodal | ELPOT | |

PRF | magnitude and phase of external forces | nodal | PFORC | |

PS | static pressure in a liquid network | nodal | STPRES | x |

PSF | static pressure in a 3D fluid | nodal | PS3DF | x |

PT | total pressure in a gas network | nodal | TOPRES | |

PTF | total pressure in a 3D fluid | nodal | PT3DF | x |

PU | magnitude and phase | nodal | PDISP | |

of displacement | ||||

RF | total force | nodal | FORC | x |

FORCI | x | |||

RFL | total flux | nodal | RFL | x |

S | Cauchy stress (structure) | int.point | STRESS | x |

STRESSI | x | |||

SDV | internal variables | int.point | SDV | x |

SEN | sensitivity | nodal | SEN | |

SF | total stress (3D fluid) | int.point | STRESS | |

SMID | Cauchy stress (shells) | int.point | STRMID | |

SNEG | Cauchy stress (shells) | int.point | STRNEG | |

SOAREA | section area | surface | x | |

SOF | section forces | surface | x | |

SOM | section moments | surface | x | |

SPOS | Cauchy stress (shells) | int.point | STRPOS | |

SVF | viscous stress (3D fluid) | int.point | VSTRES | x |

THE | thermal strain | int.point | THSTRAIN | |

TS | static temperature in a network | nodal | STTEMP | x |

TSF | static temperature in a 3D fluid | nodal | TS3DF | x |

TT | total temperature in a gas network | nodal | TOTEMP | |

TTF | total temperature in a 3D fluid | nodal | TT3DF | x |

TURB | turbulence variables in a 3D fluid | nodal | TURB3DF | |

U | displacement | nodal | DISP | x |

DISPI | x | |||

V | velocity of a structure | nodal | VELO | x |

VF | velocity in a 3D fluid | nodal | V3DF | x |

ZZS | Zienkiewicz-Zhu stress | int.point | ZZSTR | |

ZZSTRI |