XANSYS Message: 38493 [Go back to message list] [bookmark on del.icio.us]
No rating yet Subject: Re: Connecting areas with areas and volumes Author: Yaser Jaradat Date: 2002-06-04 17:20:00Tom,
I think you are right because thats the msg viewed by the note...
Model is discontinuous WSORT reordering may be better. WMID,YES may also help if line elements are connected to mid-nodes. MODEL DISCONTINUOUS ELEMENT 6 USED FOR NEW START AS ELEMENT 1
But what I dont' know if that thing affects the solution or not ?
Yaser
twall@w... wrote:
> Yaser,
> Ansys automatically reorders the elements when you solve. The default is to > ignore midside nodes during the reorder. If you have spring elements > connected only to midside nodes then you get the "model discontinuous" note, > because its not checking the midside nodes. Use the command WMID,YES to > force Ansys to use midside nodes during the reorder and you shouldn't get > the discontinuous messages anymore.
> Tom Wall > Williams International > Walled Lake, MI
> -----Original Message----- > From: Yaser Jaradat [SMTP:yjaradat@g...] > Sent: Tuesday, June 04, 2002 4:52 PM > To: xansys@yahoogroups.com > Subject: Re: [xansys] Connecting areas with areas and volumes
> Mark,
> My model is shell elements on a form of I or II section....and some > sides are connected to springs (combin39 > elements). When I solve the shells without the springs I don't get > the discontinuous msgs. but when I connect > the springs, the Note appears. I think it doesn't affect the > solution because it is neither error not warning. > It is just a note.
> yaser
> "Tate, Mark HS-SD" wrote:
> > Yaser, > > If you have tied parts of your model together with coupled nodes > or > > constraint equations, you may get this warning, but your model is > OK. Also, > > check you displacement contour plots for any obvious > discontinuities across > > your model. There should not be any step changes in color > contours. If you > > have detrimental discontinuities, this should become apparent. > Animating > > your displacements may also reveal unusual disconnects.
> > Mark Tate > > Principal Engineer > > Hamilton Sundstrand - San Diego, CA > > A United Technologies Company > > E-mail: mark.tate@h...
> > -----Original Message----- > > From: Yaser Jaradat [mailto:yjaradat@g...] > > Sent: Tuesday, June 04, 2002 11:32 AM > > To: xansys@yahoogroups.com > > Subject: Re: [xansys] Connecting areas with areas and volumes
> > Yes I am using linear quadratic elements. First I generated > keypoints then > > created divided lines then I created the areas and meshed them > according to > > the line divisions, (mapped).
> > I didnt' get any error msgs. just the NOTE about model > discontinuous...The > > model is runing ok and I got results but I am worrying about the > note may > > affect the results ?
> > Yaser
> > Roberto Porto wrote:
> > > Yaser,
> > > Are you using linear and quadratic elements? > > > If you are not, the problem is not in the common line; if you > are, define > > the linear elements first.
> > > Regards,
> > > Roberto Porto > > > DSC Engenharia > > > ----- Original Message ----- > > > From: Yaser Jaradat > > > To: xansys@yahoogroups.com > > > Sent: Tuesday, June 04, 2002 1:12 PM > > > Subject: Re: [xansys] Connecting areas with areas and volumes
> > > Roberto,
> > > I already checked that. The keypoints and the lines are common > between > > the areas at intersection. Also I checked the element. All > elements share > > the same nodes at connection points,but > > > still getting the same message.
> > > *** NOTE *** CP= 84.642 > TIME= 12:02:41 > > > Model is discontinuous > > > WSORT reordering may be better. > > > WMID,YES may also help if line elements are connected to > mid-nodes. > > > MODEL DISCONTINUOUS ELEMENT 6 USED FOR NEW START AS > ELEMENT > > 1 > > > MODEL DISCONTINUOUS ELEMENT 9 USED FOR NEW START AS > ELEMENT > > 2 > > > MODEL DISCONTINUOUS ELEMENT 10 USED FOR NEW START AS > ELEMENT > > 3 > > > MODEL DISCONTINUOUS ELEMENT 13 USED FOR NEW START AS > ELEMENT > > 4 > > > MODEL DISCONTINUOUS ELEMENT 14 USED FOR NEW START AS > ELEMENT > > 5 > > > MODEL DISCONTINUOUS ELEMENT 25 USED FOR NEW START AS > ELEMENT > > 6 > > > MODEL DISCONTINUOUS ELEMENT 26 USED FOR NEW START AS > ELEMENT > > 7 > > > MODEL DISCONTINUOUS ELEMENT 29 USED FOR NEW START AS > ELEMENT > > 8 > > > MODEL DISCONTINUOUS ELEMENT 36 USED FOR NEW START AS > ELEMENT > > 9 > > > MODEL DISCONTINUOUS ELEMENT 51 USED FOR NEW START AS > ELEMENT > > 10 > > > MODEL DISCONTINUOUS ELEMENT 52 USED FOR NEW START AS > ELEMENT > > 11
> > > And so on...
> > > Roberto Porto wrote:
> > > > Check if the lines are really the same; sometimes, there is > a line > > shorter than the other one. Plot the line numbers and vheck if > they are the > > same, if yes the areas are connected.
> > > > Regards,
> > > > Roberto Porto > > > > DSC Engenharia
> > > > ----- Original Message ----- > > > > From: Yaser Jaradat > > > > To: xansys@yahoogroups.com > > > > Sent: Tuesday, June 04, 2002 12:10 PM > > > > Subject: Re: [xansys] Connecting areas with areas and > volumes
> > > > Riccardo,
> > > > I think you when you define areas to share the same > keypoints, then > > they already will be sharing the lines > > > > ..right ? > > > > because I glued them and the results didn't change.
> > > > Am I raight or wrong ?
> > > > Yaser
> > > > Riccardo Testi wrote:
> > > > > Yaser, > > > > > your area must share lines, not only keypoints. Have you > checked > > that?
> > > > > >I am trying to create a model from multiple areas then > connect > > them > > > > > >together to work as one unit. The areas are > > > > > >perpendicular to each other to for a box or I -shape > section. I > > created > > > > > >keypoints and connected the areas > > > > > >through the common keypoints. I meshed the whole thing > then > > applied > > > > > >boudary conditions and loading. I got a > > > > > >message says that my model is discontinuous and since I > am using > > SHELL99 > > > > > >with layered material, I found that > > > > > >some of the layers were dropped when I viewed the > results file.