Unbalanced load case pressure

Questions & Discussions about ROHR2 and Finite Elements
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arshia43
Beiträge: 27
Registriert: Mi 20. Dez 2017, 08:07

Unbalanced load case pressure

Beitrag von arshia43 » Mi 14. Mär 2018, 15:03

Hi
What is the casue for this unbalanced force warning?
1.png
2.png
Best regards
/Ali
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rohr2support
Beiträge: 393
Registriert: Mi 14. Sep 2011, 08:23

Re: Unbalanced load case pressure

Beitrag von rohr2support » Mi 14. Mär 2018, 15:12

Hi Ali,

The static equilibrium is not fulfilled. Ensure that the internal pressure is switched on for all super-elements except for trunions, if these are generally calculated without internal pressure. If the problem still appears I need to have a look at your *.r2w or better at your *.sip-file.

Greetings ROHR2fesu Support
Julian

arshia43
Beiträge: 27
Registriert: Mi 20. Dez 2017, 08:07

Re: Unbalanced load case pressure

Beitrag von arshia43 » Mi 14. Mär 2018, 15:35

Thanks for the reply.
They are ON I think.
2.png
However, can the reason be small piece that I have between the fesus part and flange? (1mm pipe piece)?
3.png
I just try to keep the flange and have all of the bend also included.
Best regards
/Ali
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arshia43
Beiträge: 27
Registriert: Mi 20. Dez 2017, 08:07

Re: Unbalanced load case pressure

Beitrag von arshia43 » Do 15. Mär 2018, 07:53

H iagain
I removed the flange and small piece and add a 20mm peice after bend and it is OK now.
4.png
Best regards
/Ali
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rohr2support
Beiträge: 393
Registriert: Mi 14. Sep 2011, 08:23

Re: Unbalanced load case pressure

Beitrag von rohr2support » Do 15. Mär 2018, 08:32

arshia43 hat geschrieben:
Mi 14. Mär 2018, 15:35
Thanks for the reply.
They are ON I think.

2.png

However, can the reason be small piece that I have between the fesus part and flange? (1mm pipe piece)?

3.png

I just try to keep the flange and have all of the bend also included.
Best regards
/Ali
Ok now I understand. The last Superelement is not a zylinder it is still the bend, The connection point from ROHR2fesu to ROHR2 always should be a zylinder to avoid this issue.

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