Equivalent Stresses Sig-V

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r2user
Beiträge: 144
Registriert: Mi 14. Sep 2011, 10:18

Equivalent Stresses Sig-V

Beitrag von r2user »

Can you please tell me about the output stresses in ROHR2. For instance when you look at the stresses under the RESULTS tab. When you look at the stresses under a OPERATION condition then you can only see the Equivalent Stresses Sig-V, but when you select STRESS ANALYSIS SL or SE then you can see the stress utilization.

1) Is the latter the stresses that say when a structure is OK or not according to the code.
2) If so, what do you do with the Sig-V stresses.
3) Is this only an indication of where the stresses are high or should the Sig-V stresses also be lower than the allowable stresses according to the code.

Kind regards
Zuletzt geändert von r2user am Mi 21. Sep 2011, 13:23, insgesamt 1-mal geändert.
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rohr2support
Beiträge: 455
Registriert: Mi 14. Sep 2011, 08:23

Re: Equivalent Stresses Sig-V

Beitrag von rohr2support »

Hi
r2user hat geschrieben:1) Is the latter the stresses that say when a structure is OK or not according to the code.
Yes, The code stresses are the ones to look at
r2user hat geschrieben:2) If so, what do you do with the Sig-V stresses.
With the Sig-V stresses you do basically nothing :roll:
r2user hat geschrieben:3) Is this only an indication of where the stresses are high or should the Sig-V stresses also be lower than the allowable stresses according to the code.
No, The Sig-V stresses are not according to any code, you may safly ignore them. They are printed more for historical reasons (they existed in Rohr2 allready before the stress codes were developed) and remain there for information only. They can be used for a simple stress analysis such as: Sig-V < Elastic limit/ Safety factor but
that is now done much nicer using the stress equations SL SE etc.

Best regards
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