August 20, 2023 at 7:44 pmTim RudloffSubscriber
I'm new to Ansys and I'm not able to solve the following problem:
I have an assembly which consists only of surface elements.
When I generate the mesh I receive the following alerts:
Info: "In one or more contact regions, the contact area or the target area of shells is set to program-controlled. This can affect performance when writing the input file. Consider displaying element normals and selecting either the top or bottom shell area. "
Warning: "The contact status has suddenly changed. Check the results carefully for possible separation of contact areas."
Nevertheless, up to here I can calculate a solution.
The problem starts, when I add a convergence for one surface. The program does not calculate further and gives me the following allerts:
Error: "A contact assignment does not contain any elements. Right-click on the message and "Go to Object" shows the contact area.
The assignment may have been removed by meshing or the trim tolerance is too aggressive."
Error: "An error occurred in the post-processing module: invalid or missing result file."
Error: "An error has occurred in the Solver module: general error."
it takes me to this view when i right-click on the last error message. 25 of my contacts are marked here, but I dont know how I can resolve the problem.
Thanks a lot for any help in advance :)
August 22, 2023 at 2:22 pmAshish KumarForum Moderator
Try using a finer mesh and see if that helps.
August 24, 2023 at 7:05 pm
August 23, 2023 at 12:53 pmJosé PérezSubscriber
Could you share the project files for reviewing your settings in more detail please?
August 25, 2023 at 8:29 amTim RudloffSubscriber
I uploaded the document here.
August 25, 2023 at 8:48 amTim RudloffSubscriber
I did some more work on the topic and found 3 connections in the contact tool, which are marked in orange.
Name Kontaktseite Typ Status Anzahl der Kontaktelemente Durchdringung Spalt Geometrische Durchdringung Geometrischer Spalt Pinball im Ergebnis Real-Konstante Verbund - Platte zu Schiff Kontakt Verbund Geschlossen 35 1,42E-14 0 0 21 36 131 Verbund - Schiffsektion 2D-1@Oberfläche-Ebene17 bis Schiffsektion 2D-1@Oberfläche-Verlängern7 Ziel Verbund Geschlossen 813 1,42E-14 0 0 23 10 134 Verbund - Schiffsektion 2D-1@Oberfläche-Ebene8 bis Schiffsektion 2D-1@Oberfläche-Zusammenfügen4 Kontakt Verbund Geschlossen 5 1,30E-05 0 0 21,085 36 135
These Contacts all belong to parallel planar surfaces, that are connected to each other. The next pictures shows one example:
Im not sure if that is the reason why I cant apply convergence to my surfaces.
August 27, 2023 at 4:33 pmJosé PérezSubscriber
Hi, I was able to perform a convergence on the surface you requested. I had to make many changes in the geometry using SpaceClaim. I removed all the contacts you had created and used the option of shared topology by creating 4 separate parts.
- Parallel Surface 1.
- Parallel Surface 2.
I created bonded contacts between these 4 parts. On the parallel surfaces, I placed a pinball radius between the surfaces
With the analysis resolved, I added convergence on the surface of interest.
August 28, 2023 at 12:46 pmTim RudloffSubscriber
Thank you very much, that helped me a lot.
Could you send me your solution? I was not able to reproduce this until now.
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