Jump to content
  • Announcements

    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 


  • Content count

  • Joined

  • Last visited

  • Days Won


Novak last won the day on March 7

Novak had the most liked content!

About Novak

Profile Information

  • Country
  • Are you University user?
  1. Hi Prakash So I did the way you told showed me but I am getting an error which says 'Case Control data LOAD=3 is not referenced by any bulk data relevant for used subcase type.'. Here is the file. Could you please tell me how to solve it? Thanks in advance final_final_dogbone.hm
  2. Hi Prakash Thanks for the answer. I actually figured out the problem. I had forgotten to delete the 2D mesh and hence when I was trying to select by 'solids', it was just selecting the face. I just deleted the 2D components and it worked. Thanks for your help However, I had another question regarding displacement boundary conditions in Optistruct. In the attached model, you can see that I have created a rigid on both the sides of the part. One side I want to keep completely fix and the other one I want displacement of 20mm. I am not sure how to apply the displacement value to the rigid node which I have created in my model. Could you please have a look. Sincerely Jaivin optistruct_model2.hm
  3. Hi Prakash Please let me know as soon as possible
  4. Hi Prakash I understand the concept of indenpendent and dependent node. However, how do I select all the independent nodes. Doing it manually makes no sense. It takes too much time. How do I select all the nodes on the upper solid as independent nodes? Thanks for your help Sincerely PS: Sorry I made a mistake in the above screenshot. I wanted to write 'dependent' in the centre. Accidentally wrote 'independent'. Thanks for pointing it out.
  5. Hello Everyone I am trying to tensile test analysis and for that I have made a dogbone shape in CATIA and then exported it to Optistruct. In the attached file, you can see that I have partioned it into several solids and then meshed it. Now I want to select the top part of the dogbone on one of the side (cubical shape) and make a rigid. So I created a node in the middle of the top part so that I can apply the loads there.Then I tried to create rigid using 'Geom>rbe3>independent node(by geom)>solids'. I selected the top solid, but it only creates node on one of the surface. I want all the nodes in that solid to be sected so that I can create the rigid. I have attached the screenshot to make it clear and also attached the file Would be grateful, if someone could help me out. optsitrcut_model.hm
  6. Starting with FAQ

    Hello Sascha I had a question regarding converse software. I am new to this so the question might be a beginner's level. I was just wondering, can a source model and the target model be different. I mean if by source model is a normal plate and I want to import those properties to the 'dogbone' shape. Can I do it? Thanks in advance
  7. TCL script

    Hello Everyone Firstly thanks a lot Livil for all the help. Really grateful for it. Secondly, here is the file which Livil wrote, in case any one needs it in future. merged.tcl
  8. TCL script

    Hi Livil Exactly, that's one I meant. It prints to the file.
  9. TCL script

    Hi Livil Thanks for replying Livil. How do I assign the values obtained from the script to sigma_1, sigma_2, sigma_3. The script just prints the values, doesn't give any name or something. Thanks again
  10. TCL script

    Yes. You are right. But my aim is that once the user selects the node, it tells user what exactly is the failure stress of that particular node. The first script 'final_final_XX_YY_ZZ' gives the values of stress in XX, YY, ZZ, XY, YZ, XZ directions. I tried to output the principal stresses by directly modifying the first script, but I couldn't. So I thought to use the stress values in 'XX, YY; ZZ, XY, YZ, XZ ' direction to calculate the principal stresses using eigenvalues. The eigenvalues or the principal stresses are then used in subsequent formulas as depicted in script 2("failure stress.tcl") to calculate the failure stress. My problem is I don't know how to integrate the two script. I have attached both the files again Thanks for the help. Really appreciate it final final stress_XX_YY_ZZ.tcl failure stress.tcl
  11. TCL script

    Hey Tinh Thanks a lot for the reply. The eigenvalue things work perferct. I have added the above code in my second script. Could you please help me now with the integration of both the scripts. Attached you will find the modified version of second script "failure stress.tcl" Thanks again failure stress.tcl
  12. TCL script

    Also, the command doesn't work in hyperview! It just says "Invalid command name"
  13. TCL script

    Thanks for sharing this link Q.Nguyen. Do you have any idea how to integrate the above two scripts though?
  14. TCL script

    Hello Everyone So actually the question is: The first script attached which is "(final final XX_YY_ZZ.tcl)" tell me the values of stress in "XX, YY, ZZ, XY, YZ, XZ" direction. I want to use this values to compute the eigenvalues (which can be calculated using eigenvalues), however I am not sure the command for eigenvalue. The second script (failure stress.tcl) calculates the failure stress. In this script, 'sigma_1', 'sigma_2', 'sigma_3' are the three principal stresses which should be obtained from the previous script. I just want to integrate the two scripts, so that when I select a node, it tell me what is the failure stress for that particular node. Would really appreciate if someone can help me with it. Thanks final final stress_XX_YY_ZZ.tcl failure stress.tcl