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Element type change in coupled analysis (thermal-structural)
 
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jorge.ceballos
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Joined: 03 Jun 2015
Posts: 5

PostPosted: Wed Jun 10, 2015 7:13 am  Reply with quote

Hello all,

I want to create crosscheck the results I have obtained from Ansys WB in a thermal-mechanical coupled analysis.

For the thermal analysis I have used a LINK33 element. Instead of using command "etchg,tts", I want to change manually the element BEAM188, because is the one that WB used (I have flexion and LINK33 can't work with that). I have tried to change using


esel,s,type,,1
emodif,all,type,2


After this I continue with the normal structural problem, but it fails.

Does someone know how to solve it?

Thanks in advance.
Regards,
Jorge
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joseph.metrisin
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Joined: 07 May 2009
Posts: 404

PostPosted: Wed Jun 10, 2015 7:28 am  Reply with quote

The active DOF in a model are determined by the element types defined, whether they are used or not. Since you still have LINK33 defined, your structural solution is still carrying thermal DOF. I don't know if that's causing your error or not. I'd suggest deleting the thermal element type as well.

If the run fails again, post the error messages so we have more to go on.



Joseph T Metrisin
Structures Lead
Florida Turbine Technologies, Inc
1701 Military Tr. Suite 110
Jupiter, FL 33458 U.S.A.
+1 (561)427-6346 Office

(561)427-6191 Fax
JMetrisin@fttinc.com

Visit our website: www.fttinc.com

FTT's public email encryption keys are stored on the FTT Verified Directory at http://keys.fttinc.com

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-----Original Message-----
From: Xansys [mailto:xansys-bounces@xansys.org] On Behalf Of jorge.ceballos
Sent: Wednesday, June 10, 2015 10:14 AM
To: xansys@xansys.org
Subject: [Xansys] Element type change in coupled analysis(thermal-structural)

Hello all,

I want to create crosscheck the results I have obtained from Ansys WB in a thermal-mechanical coupled analysis.

For the thermal analysis I have used a LINK33 element. Instead of using command "etchg,tts", I want to change manually the element BEAM188, because is the one that WB used (I have flexion and LINK33 can't work with that). I have tried to change using


esel,s,type,,1
emodif,all,type,2


After this I continue with the normal structural problem, but it fails.

Does someone know how to solve it?

Thanks in advance.
Regards,
Jorge


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jorge.ceballos
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Joined: 03 Jun 2015
Posts: 5

PostPosted: Thu Jun 11, 2015 4:11 am  Reply with quote

I have followed your indications and once that I have changed the elemten type, I have deleted the LINK33 element and its set.

I still have some errors messages (up to 5). Please check the pictures.

Thanks and regards,



_________________
Jorge Ceballos Velasco
Project Engineer
GSI Helmholtzzentrum für Schwerionen Forschung GmbH
Darmstadt (Germany)
Tel: +49 6159 711488
E-mail: j.ceballosvelasco@gsi.de
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joseph.metrisin
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Joined: 07 May 2009
Posts: 404

PostPosted: Thu Jun 11, 2015 5:08 am  Reply with quote

My company web filters blocks those photo sharing sites. Can you post the relevant text messages from the output file?



Joseph T Metrisin
Structures Lead
Florida Turbine Technologies, Inc
1701 Military Tr. Suite 110
Jupiter, FL 33458 U.S.A.
+1 (561)427-6346 Office

(561)427-6191 Fax
JMetrisin@fttinc.com

Visit our website: www.fttinc.com

FTT's public email encryption keys are stored on the FTT Verified Directory at http://keys.fttinc.com

-----------------------------------------------------------------------------------------------------
Confidentiality Note:
The information contained in this transmission and any attachments are proprietary and may be privileged, intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you received this communication in error, please delete the message and immediately notify the sender via the contact information listed above.
-----------------------------------------------------------------------------------------------------


-----Original Message-----
From: Xansys [mailto:xansys-bounces@xansys.org] On Behalf Of jorge.ceballos
Sent: Thursday, June 11, 2015 7:12 AM
To: xansys@xansys.org
Subject: Re: [Xansys] Element type change in coupled analysis(thermal-structural)

I have followed your indications and once that I have changed the elemten type, I have deleted the LINK33 element and its set.

I still have some errors messages (up to 5). Please check the pictures.

Thanks and regards,

[Image: http://i57.tinypic.com/2lb0x2o.jpg ]
[Image: http://i57.tinypic.com/119ar2p.png ]

------------------------
Jorge Ceballos Velasco
Project Engineer
GSI Helmholtzzentrum für Schwerionen Forschung GmbH Darmstadt (Germany)
Tel: +49 6159 711488
E-mail: j.ceballosvelasco@gsi.de






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| The Online Community for users of ANSYS, Inc. Software |
| Hosted by PADT - www.padtinc.com |
| Send administrative requests to xansys-mod@tynecomp.co.uk |
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jorge.ceballos
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Joined: 03 Jun 2015
Posts: 5

PostPosted: Thu Jun 11, 2015 5:41 am  Reply with quote

There are five messages, all are the same with the only different of the element that goes from 1 to 5.

"Section ID set is undefined but is referenced by element 1"
...
"Section ID set is undefined but is referenced by element 5"
_________________
Jorge Ceballos Velasco
Project Engineer
GSI Helmholtzzentrum für Schwerionen Forschung GmbH
Darmstadt (Germany)
Tel: +49 6159 711488
E-mail: j.ceballosvelasco@gsi.de
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jorge.ceballos
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Joined: 03 Jun 2015
Posts: 5

PostPosted: Thu Jun 11, 2015 9:02 am  Reply with quote

I forgot do define it...you're right.

Thanks for helping!

Regards,
Jorge
_________________
Jorge Ceballos Velasco
Project Engineer
GSI Helmholtzzentrum für Schwerionen Forschung GmbH
Darmstadt (Germany)
Tel: +49 6159 711488
E-mail: j.ceballosvelasco@gsi.de
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