Whole Element Energy Density Variables

Energy density output variables are written to the restart (.res) file and the output database (.odb) file. In steady-state dynamics all energy quantities are net per-cycle values, unless otherwise noted.

See Also
In Other Guides
Energy balance

The output variables listed below are available in Abaqus/Standard.

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

All energy density components. A limited number of them are available for direct-solution steady-state dynamic and subspace-based steady-state dynamic analyses. Mode-based steady-state dynamic analyses support computation of kinetic and strain energy densities as well as the density of the energy loss due to viscous and structural damping. In frequency extraction analyses, the values of energy densities in the element are normalized. Normalization is performed for each eigenmode separately, such that the kinetic and strain energies for the whole model add up to one.

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

Kinetic energy density in the element. In steady-state dynamic and frequency extraction analyses, this is the cyclic mean value. In mode-based and direct-solution steady-state dynamic analyses and in frequency extraction analyses, only field output in the output database is supported for this variable. In frequency extraction analyses, the value of kinetic energy density in the element is normalized. Normalization is performed for each eigenmode separately, such that the kinetic and strain energies for the whole model add up to one.

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

Kinetic energy density amplitude in the element. This variable is available only in mode-based and direct-solution steady-state dynamics analyses.

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

Kinetic energy density peak value in the element. This variable is available only in mode-based and direct-solution steady-state dynamic analyses.

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

Total elastic strain energy density in the element. When the Mullins effect is modeled with hyperelastic materials, this quantity represents only the recoverable part of the energy density in the element. In steady-state dynamic and frequency extraction analyses, this is the cyclic mean value. In mode-based and direct-solution steady-state dynamic analyses and in frequency extraction analyses, only field output in the output database is supported for this variable. In frequency extraction analyses, the value of total elastic strain energy density in the element is normalized. Normalization is performed for each eigenmode separately, such that the kinetic and strain energies for the whole model add up to one.

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

Total elastic strain energy density amplitude in the element. This variable is available only in mode-based and direct-solution steady-state dynamic analyses.

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

Total elastic strain energy density peak value in the element. This variable is available only in mode-based and direct-solution steady-state dynamic analyses.

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

Total energy dissipated per unit volume in the element by rate-independent and rate-dependent plastic deformation. Not available for steady-state dynamic analysis.

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

Total energy dissipated per unit volume in the element by creep, swelling, and viscoelasticity. Not available for steady-state dynamic analysis.

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

Total energy dissipated per unit volume in the element by viscous effects, not inclusive of energy dissipated through static stabilization or viscoelasticity. In mode-based and direct-solution steady-state dynamic analyses, only field output in the output database is supported for this variable.

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

Total energy dissipated per unit volume in the element by viscous effects due to the material damping. This variable is available only in mode-based and direct-solution steady-state dynamic analyses.

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

Total energy dissipated per unit volume in the element by viscous effects due to the global damping. This variable is available only in mode-based and direct-solution steady-state dynamic analyses.

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

Total energy dissipated per unit volume in the element due to structural damping. This variable includes energy loss due to the material and global structural damping and is available only in mode-based and direct-solution steady-state dynamic analyses.

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

Total energy dissipated per unit volume in the element due to the material structural damping. This variable is available only in mode-based and direct-solution steady-state dynamic analyses.

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

Total energy dissipated per unit volume in the element due to the global structural damping. This variable is available only in mode-based and direct-solution steady-state dynamic analyses.

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

Total energy dissipated per unit volume in the element resulting from static stabilization. Not available for steady-state dynamic analysis.

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

Total electrostatic energy density in the element. Not available for steady-state dynamic analysis.

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

Total “artificial” strain energy density in the element (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 element). Not available for steady-state dynamic analysis.

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

Total energy dissipated per unit volume in the element by damage. Not available for steady-state dynamic analysis.