ACT Extension: Energy plot
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Description
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)
Download
The ACT binary extension Energy Plot can be downloaded and used for your own purposes.
Current release
Energy Plot (2.1) (9.5.2022) |
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ANSYS compatible versions: ANSYS 2021 R1, ANSYS 2021 R2 and 2022 R1 What's new:
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Version History
Energy Plot (1.1) (18.10.2019) |
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First stable release ANSYS compatible versions: 2019 R2, 2019 R3 |
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Energy Plot (1.2) (27.1.2020) |
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ANSYS compatible versions: 2019 R2, 2019 R3, 2020 R1 What's new:
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Energy Plot (1.3) (15.7.2020) |
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ANSYS compatible versions: 2019 R2, 2019 R3, 2020 R1, 2020 R2 What's new:
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Energy Plot (1.4) (12.2.2021) |
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ANSYS compatible versions: 2019 R2, 2019 R3, 2020 R1, 2020 R2, 2021 R1 What's new:
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Energy Plot (2.0) (15.9.2021) |
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ANSYS compatible versions: ANSYS 2021 R1 and 2021 R2 What's new:
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Documentation
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 optionEngCalc
set to YES (TRNOPT,FULL,,,,,HHT,,0,YES
),OUTRES
with the optionVENG
(OUTRES,VENG,ALL
).
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
Setup
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.
Figure 1: Toolbar
The object Energy Setup has the following options in its Details View:
Figure 2: Setup options of the object Energy Setup
Viewing Results
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.
Figure 3: Setup options of object Energy Post
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.
Figure 4: Chart and tabular data for displaying the energies.
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
TRNOPT
in an APDL Command Block, it is necessary to set the parameterEngCalc
to YES. - If you want to change your
OUTRES
definitions in an APDL Command Block it is necessary to useOUTRES,VENG,ALL
. - 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, **************************************************