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November 25, 2017, 09:01 |
meshing shows error
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#1 |
New Member
Siju simon
Join Date: Nov 2017
Posts: 18
Rep Power: 8 |
While meshing my model in ansys workbench, the following error shows;
Error 1; The source mesh cannot be correctly copied to the target surface. This might be because the surface is closed surface with degenerate points'. |
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November 26, 2017, 14:47 |
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#2 |
Senior Member
Gwenael H.
Join Date: Mar 2011
Location: Switzerland
Posts: 392
Rep Power: 20 |
Hi Simon,
What kind of setup / method are you using ? As suggested this may be due to a problematic area in your geometry or if you're using periodic BC and issues arise between source and target face. Also did you create or import the geometry ? |
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November 26, 2017, 21:21 |
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#3 |
New Member
Siju simon
Join Date: Nov 2017
Posts: 18
Rep Power: 8 |
I created the model using ansys itself
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November 27, 2017, 07:41 |
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#4 |
Senior Member
Gwenael H.
Join Date: Mar 2011
Location: Switzerland
Posts: 392
Rep Power: 20 |
Difficult to say without additional inputs from your side, don't forget a picture speaks a thousand words
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November 27, 2017, 12:36 |
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#5 |
New Member
Siju simon
Join Date: Nov 2017
Posts: 18
Rep Power: 8 |
Sorry...
My model was a reinforced concrete structure. I created the model using workbench and assigned all material properties. I thought it will automatically detect the bonding between steel and concrete. But it doesn't work. Didn't get the results and and error displayed. How can I give the interference between 2 materials in a single geometry. By using "manual contacts" option I tried but it doesn't work. I am very much new to Ansys software.. |
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November 27, 2017, 13:11 |
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#6 |
Senior Member
Gwenael H.
Join Date: Mar 2011
Location: Switzerland
Posts: 392
Rep Power: 20 |
Well in your case you should put the parts (concrete // rebar) into a single multibody part so you'll have conforming mesh at the interface with no need to explicitly create a contact.
To do so in DM, select the bodies > rmb > form part. In SC you need to move them to the same component and under the property tab > share topology > group. You can refer to the help manual for additional details. Have fun |
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November 28, 2017, 22:19 |
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#7 |
New Member
Siju simon
Join Date: Nov 2017
Posts: 18
Rep Power: 8 |
As you mentioned earlier, I made a reinforced concrete beam and it really worked (sharing topology). But my problem is to model a RC beam- column joint. So there comes beam, column, beam rebar, column rebar, beam stirrup and column stirrup (attaching model-fig 1). Without any grouping, ansys automatically shows the contact region between rebars and stirrups. But not showing the contact between concrete and steel. Then I made all the bodies of my geometry to a single part and shared the topology. But it gave errors at the meshing stage of modeling (attaching fig 2). So again, I made all the bodies into 2 groups; bodies of column and bodies of beam. Then I shared the topology. Here comes another problem is that the beam rebars are going into the column. So, there should be a contact region between beam rebar and column concrete. Again, it shows errors at the meshing stage(attaching fig 3). Type of meshing I provided “coarse”.
Sorry for not providing details about the model previously… fig 1.png fig 2.jpg fig 3.jpg |
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November 29, 2017, 07:27 |
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#8 |
Senior Member
Gwenael H.
Join Date: Mar 2011
Location: Switzerland
Posts: 392
Rep Power: 20 |
Hi Simon,
Well I'm not surprised that your volume mesh failed as you have a really fast transition and dealing with different element sizes. You should definitively play with the meshing options like :
Have fun |
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November 29, 2017, 07:35 |
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#9 |
New Member
Siju simon
Join Date: Nov 2017
Posts: 18
Rep Power: 8 |
What about sharing topology..? Can I make all the bodies to a single group..?
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November 29, 2017, 07:41 |
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#10 |
Senior Member
Gwenael H.
Join Date: Mar 2011
Location: Switzerland
Posts: 392
Rep Power: 20 |
Yes you can definitively do that too but you still need to play around with the meshing parameters to have a good end result
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November 29, 2017, 07:47 |
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#11 |
New Member
Siju simon
Join Date: Nov 2017
Posts: 18
Rep Power: 8 |
Thanks a lot
And Hoping your advices in future also.. |
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November 29, 2017, 08:24 |
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#12 |
Senior Member
Gwenael H.
Join Date: Mar 2011
Location: Switzerland
Posts: 392
Rep Power: 20 |
Ansys also has a special finite element (Solid65) to model reinforced concrete with/without rebar. This can also be a nice alternative instead of explicitly modelling your rebar. Additional details can be found her
Ansys Solid 65 - 3D Reinforced concrete solid Have fun |
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December 9, 2017, 21:06 |
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#13 |
New Member
Siju simon
Join Date: Nov 2017
Posts: 18
Rep Power: 8 |
hi Gweher,
i have to cut certain portion of my model, a small portion of concrete and rebar from the bottom of beam. i have to add a new material to that portion. is it possible in ansys. what i supossed to do..? attaching fig(cutting portion marked in red)fig 1.png |
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December 15, 2017, 13:16 |
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#14 |
Senior Member
Gwenael H.
Join Date: Mar 2011
Location: Switzerland
Posts: 392
Rep Power: 20 |
Hi,
Yes you can simply apply a different material to the parts in Mechanical if you have separated bodies (split them before in DM for instance). |
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