CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > Siemens

Crack problems again

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   January 30, 2003, 12:01
Default Crack problems again
Carlos Saraiva
Posts: n/a
In a 2D model I got that previously refered problem of the cracks check. I've made the refinements with Integral Couples still I got errors.

Take this example: There are two attached cells (four vertices connecting). If there was a crack problem wouldn't there exist more than the four vertices in the conecting region? Meaning that the cells weren't truly connected, and there was an empty space between them?


  Reply With Quote

Old   January 30, 2003, 14:02
Default Re: Crack problems again
Joern Beilke
Posts: n/a
I dont know what you are doing with your mesh, but if you still have the unrefined mesh you can use "cmrefine" together with "cmro" instead of "crefine".

During the cmrefine the couples are created automatically.
  Reply With Quote

Old   January 31, 2003, 04:12
Default Re: Crack problems again
Kevin Jones
Posts: n/a
The crack check will only report cracks (ie discontinuities in the mesh) if the vertices are not correctly merged together or a valid couple is not present between the cells. Running the check will isolate the cells that fail the above two criteria so that you can plot them. Have a close look at the the vertices of the cells that fail the check, plus any couples attached to the faces (CPSET,NEWS,CSET,ANY$CSET,NEWS,CPSET$CPLOT). Try merging the vertices using VMERGE or re-defining the couples using the CP command. Lastly, make sure you don't have double cells in your mesh, which could show up the problem you are seeing.
  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Crack problems Sara Siemens 3 August 6, 2008 12:18
Crack error in STAR-CD Sachin Siemens 3 April 17, 2008 01:13
found crack in prostar but no crack in CCM+ ?? Ingear Siemens 4 October 23, 2006 09:37
crack in sector mesh escapist Siemens 2 May 19, 2005 07:25
How to crack this problem Lee Siemens 2 September 12, 2003 10:40

All times are GMT -4. The time now is 05:29.