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Recent content by haseeb99b

  1. haseeb99b

    Thickness of Plate in Johnson Cook

    I am currently simulating Bullet impact on a Aluminum 5083 Plate. The problem that I am facing is that the model works fine when the thickness of aluminum plate is 20 mm or under. It starts behaving strangely when the thickness is increased. If the thickness is increased, d5 has to be reduced so...
  2. haseeb99b

    Temperature in Johnson Cook Model

    Iam getting the following error "Degree of freedom 11 and at least one of degrees of freedom 1 thru 6 must be active in the model for *dynamic temp-disp. Check the procedure and element types used in this model."
  3. haseeb99b

    Temperature in Johnson Cook Model

    Dear, Mcakir, I was using Dyanamic Explicit ? Please could you guide me about the term Temp-Disp ?
  4. haseeb99b

    Temperature in Johnson Cook Model

    Hi. I am working on ballistic impact on Aluminum 7017. I am facing an issue that if I give the value of Temperature in "Pre-defined Fields", the material is not removed properly. But if I don't give the value of the temperate, the model seems to work just fine. I wanted to ask that is the...
  5. haseeb99b

    Bullet not Penetrating Through Metal Plate Problem

    I am changing the mesh size but I redefine the surface set, as the previous surface becomes invalid when mesh is varied.
  6. haseeb99b

    Bullet not Penetrating Through Metal Plate Problem

    @StefCon the issue is almost resolved now. I did it as you said. There is a slight problem now. As you can see that all of element is not removed. Any solution to this issue ?? Refinig mesh might solve this issue...
  7. haseeb99b

    Bullet not Penetrating Through Metal Plate Problem

    If I remove the Bullet from the viewport, this is what it seems from the back side of the plate.http://files.engineering.com/getfile.aspx?folder=e2566e5a-dd26-4fc5-99ad-8ac25f541fce&file=img3.PNG
  8. haseeb99b

    Bullet not Penetrating Through Metal Plate Problem

    Backside of the platehttp://files.engineering.com/getfile.aspx?folder=7f9d104b-909c-477d-9c80-d1236db9b0d3&file=img2.PNG
  9. haseeb99b

    Bullet not Penetrating Through Metal Plate Problem

    THankyou for your kind reply @StefCon. I am creating surface using Mesh. Here are the images.http://files.engineering.com/getfile.aspx?folder=2aa1cc6c-d76b-4b7f-8866-08a29f5b105f&file=img1.PNG
  10. haseeb99b

    Bullet not Penetrating Through Metal Plate Problem

    Hi Everyone. I am facing a strange problem. Bullet material is Steel and the Metal Plate is AL-7017. I have turned on the "STATUS" from Field Output and also written that INTERIOR thingy with the respective sets before *END ASSEMBLY. The problem is that the job starts, for a few millimeters the...
  11. haseeb99b

    ABAQUS JH-2 Model

    What is meant by the term "FS" in the material definition of a ceramic (Silicon Carbide in this case) under Johnson Holmquist Damage(JH-2) Model of JHB Model? Screenshot is also attached with it. http://files.engineering.com/getfile.aspx?folder=2c178e21-699f-4daa-8345-cbcec1c4139b&file=JH2.JPG
  12. haseeb99b

    JHB Model Parameters for 99.5 % Alumina

    Johnson Hlomquist Bissel Damage Model... Used for the high speed impact on brittle materials.
  13. haseeb99b

    JHB Model Parameters for 99.5 % Alumina

    I am working on a high speed impact on 99.5 % Alumina using JHB model. Is there any research paper of link from where I could find the JHB model constants for 99.5 % Alumina?? All I could find were JH-2 parameters.
  14. haseeb99b

    Internal Surfaces- Perforation

    Dear Mcakir, Yes, I am stuck on this issue and tried different things but in vain. I'd be grateful if you could guide me regarding this issue.
  15. haseeb99b

    Internal Surfaces- Perforation

    I am working on bullet impact on ceramics. Materials are ABQ_JHB_siliconCarbide and Gold. I also performed this on the Aluminum and Steel (Tech. Brief) and used this procedure in that model and it worked perfectly. *Surface, type=ELEMENT, name=SPlate , Set-Plate, INTERIOR .... *Contact...
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