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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...

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."

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

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...

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

@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...

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

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

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

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...

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

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

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.

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.

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...