Analysis of a Cylindrical Tube with Explicit
Analysis of a Cylindrical Tube with Explicit
(OP)
Hi All,
Recently I just started to work on a really simple analysis regarding a cylindrical tube with Explicit. What I have is a Tube with the inner diameter of 14mm (as shown in Fig. 1),
http ://files.e ngineering .com/getfi le.aspx?fo lder=81f95 04a-c04e-4 4fa-92bd-8 4c81b0cc98 e&file =Help1.png
and would like to expand it to 26mm in about 25 seconds. Now the analysis can be completed, but the deformed results is unacceptable. As shown in Fig. 2
http ://files.e ngineering .com/getfi le.aspx?fo lder=47637 1a8-7296-4 d25-866a-d e24b26c606 d&file =Help2.png
I really don't know what went wrong here, and I believe I have encountered similar problems before. So I wonder if any people here have experienced this before, or is this a quite common problem that there is even a term to call it.
Thanks a lot.
Also the input file is attached if anyone doesn't mind taking a look.
http: //files.en gineering. com/getfil e.aspx?fol der=219402 1e-16b2-44 63-8664-45 0d9d141e8c &file= Elastic_Ex plicit.zip
Recently I just started to work on a really simple analysis regarding a cylindrical tube with Explicit. What I have is a Tube with the inner diameter of 14mm (as shown in Fig. 1),
http
and would like to expand it to 26mm in about 25 seconds. Now the analysis can be completed, but the deformed results is unacceptable. As shown in Fig. 2
http
I really don't know what went wrong here, and I believe I have encountered similar problems before. So I wonder if any people here have experienced this before, or is this a quite common problem that there is even a term to call it.
Thanks a lot.
Also the input file is attached if anyone doesn't mind taking a look.
http:





RE: Analysis of a Cylindrical Tube with Explicit
The manager
RE: Analysis of a Cylindrical Tube with Explicit
Thanks,
RE: Analysis of a Cylindrical Tube with Explicit
Rob Stupplebeen
https://sites.google.com/site/robertkstupplebeen/
RE: Analysis of a Cylindrical Tube with Explicit
Thanks for you reply!
PS: Any people know how to reply to one specific reply in this forum? I cannot find a proper "reply" button......
RE: Analysis of a Cylindrical Tube with Explicit
Mr Stupplebeen, if you could share some light on this as well, it will be appreciated.
RE: Analysis of a Cylindrical Tube with Explicit
I would greatly appreciate your further comment on this problem if you ever figure it out.
Thanks,
RE: Analysis of a Cylindrical Tube with Explicit
The manager
RE: Analysis of a Cylindrical Tube with Explicit
RE: Analysis of a Cylindrical Tube with Explicit
The manager
RE: Analysis of a Cylindrical Tube with Explicit
I double checked my result, and I believe that what I have is a severe hourglassing problem. I didn't realize it since I didn't check results during the simulation where hourglass began to form. However, even after I switched my element from reduced to full integration, the simulation still aborted. Still working on it.
Corus, thanks a lot for your suggestion.The reason I didn't use 2d Axisymmetric is that this cylinder is only the first part of a contact problem, which is not symmetric when other parts are considered.
MechIrl, I have never thought of the mass scale would be a problem, I will definitively take a look. Thanks,