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Pau

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Everything posted by Pau

  1. Hello, Have you experienced the same issue meshing in any other part? if this is the only part you are having problems with, maybe there's something corrupted in the file. Please try this: - remove mold and gate - export the rest as a parasolid - close the application - open the application, create gate and mold and assign the parameters again. Run simulation. Please, let us know if the error persists. Best Regards
  2. This option is useful only for polynurbs. we don't recommend this option for non polynurbs geometries. if you mesh a fit polynurb, surface mesh will mesh every single square, this for huge parts can be a problem. using polynurb option will avoid this and will help to reduce amount of elements and meshing problems with polynurbs. We recommend to activate this option ONLY for polynurbs.
  3. Hello Chris, You can edit mold thermal properties by creating a new material inside the mold context. Best Regards
  4. Hello Paulo, Hot tearing is a failure produced because of residual stresses during the solidification. Currently we can't predict this defect but we are working on a thermo-mechanical analysis that will allow us to postprocess hot tearing. This is scheduled for 2020.X Best Regards
  5. Hello Paulo, Mirco Porosity result is based in niyama criterion but more factors are considered besides thermal gradient and cooling rate. This result avoids the need to know the threshold Niyama value below which shrinkage porosity forms by showing results as form of a percentage. Maximum percentage will be the maximum contraction value of the material used. So in your case, results are showing that 4.17% of the red areas is a void. Regarding to your question about avoiding porosity in your part, what you can do is to place cooling lines close to the porosity regions. Anyway, you have to think that avoid all the porosity sometimes is very difficult and having porosity is not always a problem If porosity is not in a region prone to suffer defects (structural regions, leakages, outhern surfaces..) In your case for example, it looks that central region of the door handle is worst than the regions of the corner where the bigger porosities are since those areas are prone to structural damage due to mechanical stresses. I attached a paper where MicroPorosity is explained. 1-Prediction of Shrinkage Pore Volume Fraction Using a Dimensionless Niyam...pdf
  6. Hello, By pressing shift and double clicking you should be able to select all the adjacent surfaces with an inferior angle than the selected at the hamburguer menu inside core options. If it still does not work, please send us the model and we can take a look at it. Best Regards
  7. Hello, You just need to click on the first value of the legend to change the max and the last to change the min. Regards
  8. Hello, "Porosity" result shows the macro porosity as a percentage "Total shrinkage volume" shows the macro porosity as a volumetric value. "Micro Porosity" shows micro porosity as a percentage "Niyama" shows micro porosity as ((C*s)**0.5/mm)
  9. Hello, The acceptance of the porosity level will rely on where the porosity is (surface finished, leakages, structural regions ..) more than the size itself. Those standards are used by the companies to designate different porosity regions depending on the requirments from their components. hope this help.
  10. Hello, Niyama is just the thermal gradient divided by the square root of the cooling rate, and it helps to detect micro porosity. I attached a ppt where this is explained but basically the lower the niyama values (high cooling rate or low thermal gradient) the higher the possibility of micro porosity. Remember that Niyama works under a certain range depending on the different materials. This range is not necessary to know in Micro Porosity result. This result is based on dimensionless niyama so no range known is needed. This result is based on niyama and also in other parameters like pressure... (I attached a paper that talks about it) Best Regards Micro_Porosity.pptx 2008-5.6_nileakers.pdf
  11. Hello Brendan, Could you please upload this file you are having problems with to check what is happening? Best Regards
  12. Hello Oliwia, Could you please send us one of the models you are having problems to mesh? I would like to know if the problem is the software or the geometry. Thanks.
  13. Hola Iñaki, Parece que la licencia no está funcionando. Por favor, contáctame a mi email para ayudarte a solucionar el problema. Un saludo. ptorne@altair.com
  14. Hello Andy, you can use AlMg5, it is a similar alloy. Please, contact me if you need aditional info. ptorne@altair.com Best Regards
  15. Hi Uri, Inside the project folder you'll find different files (meshing files, geometry files, solver files...) Is there any file in particular you are interested in? I attached a document that explains how to run C2C in batch mode. Best Regards C2C_BackgroundRunning_v4.0.docx
  16. Hi Uri, This problem appears when the ingates are not well set. It looks like this is a second iteration of an initial simulation, maybe during the second selection of materials something got corrupted. When this happens I recommend to start again the simulation from the original stl creating a new project. Please find attached a simulation ready to run, please check the parameters are fine and run the simulation again. Best Regards ALL-FEED_1.gid.rar
  17. There is a problem when the ingate surface is in contact with one of the surfaces of the additional components (sleeve, core,..) Meanwhile, in case you have this situation, please extrude just an small offset of the face in order to separate the ingate surface from the sleeve surfaces. (see below image) We'll work to solve this issue. Please, find below a link to download the file with the ingate meshed. https://ftam1.altair.com/message/m40gPhijtxxbaxGThmKcbB Best Regards
  18. Hello Uri, The problem is there is no ingate on this model. Please, start again from the scratch and mesh again using an ingate. This should solve the problem. Best Regards
  19. Dear Uri, There is something wrong with the configuration of the sleeves but it's hard to know what's happening just with this error message. If you send us the project folder we can debug and try to find the error. https://ftam1.altair.com/filedrop/~LMxXrO Best Regards
  20. Hi Dinesh, Wheel rims are made by Gravity Casting or Low Pressure Die Casting processes. Both processes can be simulated in C2C. Please, take a look at the attached document. Exercises 2 and 3 talk about the setting up these processes. Feel free to contact us if you have any questions. Click2Cast_Training_4.1.pdf
  21. Hello Mario, Is this happening every time? Could you please try with a different model just to be sure that it isn't a problem of permissions? You can contact me to check this in a webmeeting. ptorne@altair.com
  22. Dear Otavio, It looks like there is a problem with the inlet. Could you please check the ingate has been well defined (check if it is inside the geometry and in the same plane) Please check too the element size, 1mm seems too small for this part. Best regards
  23. Hello Franz, You are right regarding chillers, if your chiller is not in an entire surface we recommend to extrude a little bit the surface of the part in contact with the chiller to be able to select it as a chiller in C2C. Regarding different thicknesses on the sleeves or chillers, what you can do is to use both components, so you can select the “first chiller thickness” using the chiller component and the “second chiller thickness” using the sleeve component and then creating the same chiller material inside the sleeves using the dB editor and conversely. If you wanted to use more than 2 thicknesses you would have to change thicknesses manually and run the solver in batch mode... Jfyi, we are moving C2C to a parametric engine and in the next version of C2C (C2C 2018) all these limitations will disappear. Best Regards
  24. Dear Jeff, There is no limitation but we have find a bug and we are going to fix it for the next release. Meanwhile there is a way to solve this: Go to: ...\Click2Cast_4.1.0.102\problemtypes\click2cast.gid\config open the file: config.xml and change this value from 0.5 to 0.05 <Item id="PercentToCheckIsolatedElems" dv="0.05" /> open again C2C and run the mesher. This should solve the problems witth the sleeve selection while we release the next update. Thanks. ptorne@altair.com
  25. Dear Semih, This is because one of the files we save in your user is not being able to be saved. Is this happened only once or with every geometry? Could you please contact me directly? We can have an online meeting to fix this problem. Best Regards Pau ptorne@altair.com
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