Whole and partial model variables

The following variable is available only for adaptive domains (see Defining ALE adaptive mesh domains in Abaqus/Standard).

VOLC

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Change in area or change in volume of an element set solely due to adaptive meshing.

You can request equivalent rigid body motion whole element set variable output to the data, results, or output database file (see Element output and Element output). The variables listed are available only for implicit dynamic analyses using direct integration except where indicated.

XC

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Current coordinates of the center of mass for the entire set or the entire model. Not available for eigenfrequency extraction, eigenvalue buckling prediction, complex eigenfrequency extraction, or linear dynamics procedures. Available also for static analyses but only from the output database.

XCn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Coordinate n of the center of mass for the entire set or the entire model ($n=1,2,3$).

UC

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Current displacement of the center of mass for the entire set or the entire model. Available also for static analyses but only from the output database.

UCn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Displacement component n of the center of mass for the entire set or the entire model ($n=1,2,3$).

URCn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Rotation component n of the center of mass for the entire set or the entire model ($n=1,2,3$).

VC

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Equivalent rigid body velocity components summed over the entire set or the entire model.

VCn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Component n of the equivalent rigid body velocity summed over the entire set or the entire model ($n=1,2,3$).

VRCn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Component n of the equivalent rigid body angular velocity summed over the entire set or the entire model ($n=1,2,3$).

HC

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Current angular momentum about the center of mass for the entire set or the entire model.

HCn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Component n of the angular momentum about the center of mass for the entire set or the entire model ($n=1,2,3$).

HO

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Current angular momentum about the origin for the entire set or the entire model.

HOn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Component n of the angular momentum about the origin for the entire set or the entire model ($n=1,2,3$).

RI

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Current rotary inertia about the origin of the entire set or the entire model. Not available for eigenfrequency extraction, eigenvalue buckling prediction, complex eigenfrequency extraction, or linear dynamics procedures. Available also for static analyses but only from the output database.

RIij

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

$ij$-component of the rotary inertia about the origin of the entire set or the entire model ($i\le j\le 3$).

MASS

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Current mass of the entire set or the entire model. Available also for static analyses but only from the output database.

VOL

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Current volume of the entire set or the entire model. Available also for static analyses but only from the output database. (Available only for continuum and structural elements that do not use general beam or shell section definitions.)

You can request inertia relief whole model variable output to the data or output database file (see Element output and Element output). Since these variables have unique values for the entire model, the variable output is independent of the specified region. The variables listed are available only for those analyses that include inertia relief loading (see Inertia relief).

IRX

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Current coordinates of the reference point.

IRXn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Coordinate n of the reference point ($n=1,2,3$).

IRA

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Equivalent rigid body acceleration components.

IRAn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Component n of the equivalent rigid body acceleration ($n=1,2,3$).

IRARn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Component n of the equivalent rigid body angular acceleration with respect to the reference point ($n=1,2,3$).

IRF

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Inertia relief load corresponding to the equivalent rigid body acceleration.

IRFn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Component n of the inertia relief load corresponding to the equivalent rigid body acceleration ($n=1,2,3$).

IRMn

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Component n of the inertia relief moment corresponding to the equivalent rigid body angular acceleration with respect to the reference point ($n=1,2,3$).

IRRI

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Rotary inertia about the reference point.

IRRIij

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

$ij$-component of the rotary inertia about the reference point ($i\le j\le 3$).

IRMASS

.dat: yes  .fil: no  .odb Field: no  .odb History: yes  

Whole model mass.

You can request variable output from a mass diffusion analysis (Mass diffusion analysis) to the data, results, or output database file (see Element output and Element output). If you specify an output region, the variable is calculated over the user-specified region. If you do not specify an output region, the variable is calculated as the total over the entire model.

SOL

.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Amount of solute in an element set, calculated as the sum of ESOL (amount of solute in each element) over all the elements in the set.

CRPTIME

.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Creep time, which is equal to the total time in procedures with time-dependent material behavior (see Rate-dependent plasticity: creep and swelling).

The following variables are output automatically during a frequency extraction analysis (Natural frequency extraction).

EIGVAL

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Eigenvalues.

EIGFREQ

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Eigenfrequencies.

GM

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Generalized masses.

CD

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Composite damping factors.

PFn

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Modal participation factors 1–7 ($n=1,2,3$ corresponding to displacements, $n=4,5,6$ for the rotations, and $n=7$ for acoustic pressure).

EMn

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Modal effective masses 1–7 ($n=1,2,3$ corresponding to displacements, $n=4,5,6$ for the rotations, and $n=7$ for acoustic pressure).

The following variables are output automatically during a complex frequency extraction analysis (Complex eigenvalue extraction).

EIGREAL

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Real parts of the eigenvalues.

EIGIMAG

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Imaginary parts of the eigenvalues.

EIGFREQ

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Eigenfrequencies.

DAMPRATIO

.dat: automatic  .fil: no  .odb Field: no  .odb History: automatic  

Damping ratios.

If the following whole model variables are relevant for a particular analysis, you can request them as output to the data, results, or output database file (see Total energy output and Total energy output). If you do not specify an output region, whole model variables are calculated. When you specify an output region, the relevant energy totals are calculated over the user-specified region.

These variables are not available for eigenvalue buckling prediction, eigenfrequency extraction, or complex frequency extraction analysis. You cannot specify an output region for modal dynamic, random response, response spectrum, or steady-state dynamic analysis.

See Energy balance and Energy computations in a contact analysis for details of the energy definitions. In steady-state dynamics all energy quantities are net per-cycle values, unless otherwise noted.

ALLAE

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

“Artificial” strain energy associated with constraints used to remove singular modes (such as hourglass control), and with constraints used to make the drill rotation follow the in-plane rotation of the shell elements.

ALLCCDW

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Contact constraint discontinuity work.

ALLCCEN

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Contact constraint elastic energy in normal direction due to penalty constraint enforcement.

ALLCCET

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Contact constraint elastic energy in tangential direction due to friction penalty constraint enforcement.

ALLCCE

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

The sum of ALLCCEN and ALLCCET.

ALLCCSDN

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Contact constraint stabilization dissipation in normal direction.

ALLCCSDT

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Contact constraint stabilization dissipation in tangential direction.

ALLCCSD

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

The sum of ALLCCSDN and ALLCCSDT.

ALLCD

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Energy dissipated by creep, swelling, viscoelasticity, and energy associated with viscous regularization for cohesive elements and cohesive contact.

ALLEE

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Electrostatic energy.

ALLFD

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Total energy dissipated through frictional effects. (Available only for the whole model.)

ALLIE

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Total strain energy. (ALLIE = ALLSE + ALLPD + ALLCD + ALLAE + ALLQB + ALLEE + ALLDMD.)

ALLJD

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Electrical energy dissipated due to flow of electrical current.

ALLKE

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Kinetic energy. In steady-state dynamic and frequency extraction analyses, this is the cyclic mean value. In frequency extraction analyses, the value of kinetic energy is normalized. Normalization is performed for each eigenmode separately, such that the kinetic and strain energies for the whole model add up to one.

ALLKEA

.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Kinetic energy amplitude. This variable is available only in mode-based steady-state dynamic analyses.

ALLKEP

.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Kinetic energy peak value. This variable is available only in mode-based steady-state dynamic analyses.

ALLKL

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Loss of kinetic energy at impact. (Available only for the whole model.)

ALLPD

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Energy dissipated by rate-independent and rate-dependent plastic deformation.

ALLQB

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Energy dissipated through quiet boundaries (infinite elements). (Available only for the whole model.)

ALLSD

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Energy dissipated by automatic stabilization. This includes both volumetric static stabilization and automatic approach of contact pairs (the latter part included only for the whole model).

ALLSE

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Recoverable strain energy. In steady-state dynamic and frequency extraction analyses, this is the cyclic mean value. In frequency extraction analyses, the value of strain energy is normalized. Normalization is performed for each eigenmode separately, such that the kinetic and strain energies for the whole model add up to one.

ALLSEA

.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Recoverable strain energy amplitude. This variable is available only in mode-based steady-state dynamic analyses.

ALLSEP

.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Recoverable strain energy peak value. This variable is available only in mode-based steady-state dynamic analyses.

ALLVD

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Energy dissipated by viscous effects including viscous regularization (except for cohesive elements and cohesive contact), not inclusive of energy dissipated by automatic stabilization and viscoelasticity. If this variable is requested for the whole model in mode-based steady-state dynamic analyses, it includes the energy loss due to the material, global, and modal damping. If this variable is requested for a part of the model in mode-based steady-state dynamic analyses, the energy loss due to the modal damping is not included.

ALLVDE

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Energy dissipated by viscous effects due to the material damping. This variable is available only in mode-based steady-state dynamic analyses.

ALLVDG

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Energy dissipated by viscous effects due to the global damping. This variable is available only in mode-based steady-state dynamic analyses.

ALLVDM

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Energy dissipated by viscous effects due to the modal damping. This variable is available only for the whole model in the mode-based steady-state dynamic analyses.

ALLHD

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Energy dissipated due to the structural damping. If this variable is requested for the whole model in mode-based steady-state dynamic analyses, it includes energy loss due to the material, global, and modal damping. If this variable is requested for a part of the model in mode-based steady-state dynamic analyses, energy loss due to the modal damping is not included.

ALLHDE

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Energy dissipated due to the material structural damping. This variable is available only in mode-based steady-state dynamic analyses.

ALLHDG

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Energy dissipated due to the global structural damping. This variable is available only in mode-based steady-state dynamic analyses.

ALLHDM

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Energy dissipated due to the modal structural damping. This variable is available only for the whole model in mode-based steady-state dynamic analyses.

ALLDMD

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Energy dissipated by damage.

ALLWK

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

External work. (Available only for the whole model.)

ETOTAL

.dat: automatic  .fil: automatic  .odb Field: no  .odb History: yes  

Total energy balance (available only for the whole model). (ETOTAL = ALLKE + ALLIE + ALLVD + ALLSD + ALLKL + ALLFD + ALLJD + ALLCCE − ALLWK − ALLCCDW.)

EFLOW

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Energy flow from a given portion of the model through the given boundary. This variable is available only in mode-based steady-state dynamic analyses.

PFLOW

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Power flow from a given portion of the model through the given boundary. This variable is available only in mode-based steady-state dynamic analyses.

RADEN

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Radiated energy from/into a given acoustic cavity through the given boundary. This variable is available only in mode-based steady-state dynamic analyses.

RADPOW

.dat: automatic  .fil: no  .odb Field: no  .odb History: yes  

Radiated power from/into a given acoustic cavity through the given boundary. This variable is available only in mode-based steady-state dynamic analyses.