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  1. bernardirafael

    Ball-passing test on bended pipes

    Yeah a minor ellipsing is okay. The ball diameter should be smaller to pass with an "acceptable" distortion. I usually consider a maximum distortion of 12% (max diameter vs min diameter in a bend). I could make a sphere that passes through a 12% and below distorted bend. Maybe this could...
  2. bernardirafael

    Ball-passing test on bended pipes

    @SWComposites The standard would indicate the ball diameter for the given pipe, I think. I could just pick any diameter and work with it upon agreement with the client... but that is not ideal in my opinion as I could choose a diameter which I'm 100% sure will approve all bends, or the client...
  3. bernardirafael

    Ball-passing test on bended pipes

    Dear all, We are currently manufacturing an equipment for a client that is composed of many bended 48 mm pipes. The client requires a "ball-passing test" on all curves, which consists in passing a tolerated sphere inside the pipe: if it goes through, the bend is approved, otherwise it's not...
  4. bernardirafael

    Same output frequency, different input frequencies?

    Hello dear friends, I am wondering if there's a way to solve a problem I'm facing. I want to create a crank mechanism that runs at a steady frequency (18Hz). However, the electrical engine that will run it will rotate at different speeds. Is there any way to make it? Any mechanism that...
  5. bernardirafael

    Selecting elements

    Hello! I am performing a transient thermal analysis (welding, to be more specific). I am trying to use the Birth and Death technique and so far all I could do is to kill the elements of the weld bead. Now I want to reactivate them... I have two ideas that I would like to test but I have no idea...
  6. bernardirafael

    HAZ prediction using FEM

    Anyone?
  7. bernardirafael

    HAZ prediction using FEM

    Thank you for replying. The surface was polished and then Nital 5% was used to reveal the HAZ. According to this process, the visible HAZ would be between 1148 °C and 1495 °C (grain coarsened HAZ)? -Rafael
  8. bernardirafael

    HAZ prediction using FEM

    Hello, I am performing a transient thermal analysis to identify/predict the heat affected zone dimentions. The welding is being performed on a SAE 1020 steel, using the same metal as filler material. After obtaining the welding results they will be compared to experimental ones. I've seen in a...
  9. bernardirafael

    Exporting/Importing Ansys Workbench results file

    Hello all, I am trying to do some subsequent simulations and I want to import the last subset of data into the next simulation. To be more specific, after heating up a plate, I want to export, if possible, it's nodal temperatures into another plate (with same dimentions) but this time it will...
  10. bernardirafael

    Can't use a new coordinate system

    Hello once again, I am having a hard time trying to activate another coordinate system. Here's the deal: a heat source moves through the center of the plate, based on the Global Coordinate System. After it finishes moving, another heat source must move 0.02 meters aside the path of the firt...
  11. bernardirafael

    Help with Birth and Death and other stuff

    Hello again! I am having some problems regarding my thesis' simulation, so I am looking forward to any help! I have some questions that I am about to make, but first, I think I should explain what I am trying to do: I want to simulate what we call butt-welding, so I have to plot many weld beads...
  12. bernardirafael

    Heat source doesn't seems to be propagating heat

    @hendersdc Thanks for your reply! Actually the heat source is moving so the "heat shape" shown was expected. I managed to fix the problem, now I am looking for a similar work to validate my model... thanks for your help!
  13. bernardirafael

    Heat source doesn't seems to be propagating heat

    I managed to solve the problem of my last thread here, but now I am having another one. The Workbench is plotting the heat source and it is clearly heating the plate, but it seems that the results of the last substep are not being considered on the next one. As the heat should be propagated...
  14. bernardirafael

    Moving Heat Source Problems

    Hello all! I am currently trying to make a moving heat source on ANSYS Workbench v14.5, and since I am a newbie I am using a script I've found on a Mastery's Degree thesis regarding welding. It uses the same heat source that I want to use, called double ellipsoid. The problem is that it's not...
  15. bernardirafael

    Welding with ANSYS Workbench

    Thank you for these great tips! I thought that the Workbench would be the way to go... but it seems that I was wrong. I will give it a shot and take a look on APDL scripts. Thanks for the amazing help!
  16. bernardirafael

    Welding with ANSYS Workbench

    Thanks for your help! I want to analyse the affected zone size due to the welding. Can't I use APDL commands on ANSYS Mechanical? Do I really have to use the Mechanical APDL? I am asking this because the Mechanical APDL seems to be harder to unexperienced users.
  17. bernardirafael

    Welding with ANSYS Workbench

    @flash3780 Thanks for your reply! Actually, the analysis will be based on buttering welding, so I'll probably just make some fillets and analyse the heat propagation, to compare to in real life analysis. The main problem here is not only to create the moving heat source but also use the...
  18. bernardirafael

    Welding with ANSYS Workbench

    Hello, My name is Rafael, I am researching buttering welding analysis using ANSYS Workbench. As it was recomended, I bought the book "COMPUTATIONAL WELDING MECHANICS" [Goldak], but it hasn't arrived yet. As I am waiting for it, I'd like to know if any of you could give me some tips on this...

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