ACT Extension: Energy plot
The extension allows evaluation of the time histories of the energies like:
- stiffness energy
- kinetic energy
- damping energy
- work done by external load
- artificial energy due to hourglass control/drill stiffness or due to contact stabilization damping
- artificial energy due to nonlinear stabilization.
Demonstration video (version 1.2)
The ACT binary extension Energy Plot can be downloaded and used for your own purposes.
Energy Plot (1.4) (12.2.2021)
ANSYS compatible versions: 2019 R2, 2019 R3, 2020 R1, 2020 R2, 2021 R1
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Energy Plot (1.1) (18.10.2019)
First stable release
ANSYS compatible versions: 2019 R2, 2019 R3
Energy Plot (1.2) (27.1.2020)
ANSYS compatible versions: 2019 R2, 2019 R3, 2020 R1
Energy Plot (1.3) (15.7.2020)
ANSYS compatible versions: 2019 R2, 2019 R3, 2020 R1, 2020 R2
The extension provides the time history data using of APDL commands which are added to the ANSYS input deck (ds.dat). The following APDL commands are used internally:
TRNOPT(only the Transient Structural analysis) with option
EngCalcset to YES (
OUTRESwith the option
The energy data are exported using command
ENERSOL. The following energy data are available:
- SENE Potential energy (stiffness energy)
- KENE Kinetic energy
- DENE Damping energy
- WEXT Work done by external load
- AENE Artificial energy due to hourglass control/drill stiffness or due to contact stabilization damping
- STEN Artificial energy due to nonlinear stabilization
To activate the energy plots, it is necessary to insert the object Energy Setup via the toolbar (see Figure 1) or via context menu into the outline tree of the desired structural or transient analysis.
The object Energy Setup has the following options in its Details View:
To review the results, insert the object Energy Post via the toolbar or via the context menu into solution section of the outline tree. In the Details View of this object, you can choose which energies you want to display and customize the options of the chart, see Figure 3.
When the Energy Post object is activated, the chart and the table with the energy data are shown in the Worksheet and the Data View sub-windows, see Figure 4.
Restrictions and Limitations (related to version 1.4)
- Currently only Static Structural and Transient Structural (with Full method) analyses are supported.
- If you want to use command
TRNOPTin an APDL Command Block, it is necessary to set the parameter
- If you want to change your
OUTRESdefinitions in an APDL Command Block it is necessary to use
- If the analysis was not finished due to non-convergence or stopped the post-processing part will not be executed and the energy plot will not be available. If you still want to evaluate energies you can insert APDL Commands in the Solution object with following content:
/COM, ************************************************** FINISH /POST26 *GET,enerStepsCount,ACTIVE,0,SET,NSET *DIM,enerValues,array,enerStepsCount,7 ENERSOL, 2,SENE,,SENE ! Potential energy (stiffness energy) ENERSOL, 3,KENE,,KENE ! Kinetic energy ENERSOL, 4,DENE,,DENE ! Damping energy ENERSOL, 5,WEXT,,WEXT ! Work done by external load ENERSOL, 6,AENE,,AENE ! Artificial energy due to hourglass control/drill stiffness or due to contact stabilization damping ENERSOL, 7,STEN,,STEN ! Artificial energy due to nonlinear stabilization vget,enerValues(1,1),1,, vget,enerValues(2,2),2,, vget,enerValues(3,3),3,, vget,enerValues(4,4),4,, vget,enerValues(5,5),5,, vget,enerValues(6,6),6,, vget,enerValues(7,7),7,, *CFOPEN,'outEnersol','txt',' ' *VWRITE,enerValues(1,1),enerValues(1,2),enerValues(1,3),enerValues(1,4),enerValues(1,5),enerValues(1,6),enerValues(1,7) (7E16.8) *CFCLOS enerStepsCount= enerValues= finish /post1 /COM, **************************************************