Static structural analysis for rotating wheel

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8 years 10 months ago #8086 by Claus
RichardS: no, I am not certain about anything in Code_Aster really, but it does seem to create a rotated coordinate system in which you can specify the usual BCs for symmetry. I do not know how LIAISON_OBLIQUE and LIAISON_MAIL with an angle differ in this application (rotational load).

Please elaborate if you want to.

/C

Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version

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  • Zach
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8 years 10 months ago #8104 by Zach
Thank you RichardS one more time!
now it is clear and works good - giving quite realistic results.

Is it possible to add into existing code fatigue?
ie how to estimate (example/tutorial) material fatigue (based on Wohler`s curve for mid steel for example) after some number of cycles (wheel rotations)?

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8 years 10 months ago - 8 years 10 months ago #8105 by RichardS
Last edit: 8 years 10 months ago by RichardS.

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  • Zach
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8 years 10 months ago #8110 by Zach
Thank you,
now I try to add fatigue into existing code and have got the following error:

_F(CHAM_GD=Fatigue,
SyntaxError: non-keyword arg after keyword arg

here is also mess file:
www.dropbox.com/s/40bpsaxy2xb6qz9/9243-5_1.1Case.mess?dl=0

Could you please help to understand what does it mean?

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8 years 10 months ago - 8 years 10 months ago #8111 by RichardS
Your error message is weird,
but the problem it that you
1. do the fatigue calculation BEFORE you even compute the stresses (CALC_CHAMP)
2. use the "Solution" concept as result, which does not exist and it should be RESU

After fixing that it should work.

Best,
Richard

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Last edit: 8 years 10 months ago by RichardS.

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8 years 10 months ago #8113 by Zach
Thank you,

I have changed code:
www.dropbox.com/s/40bpsaxy2xb6qz9/9243-5_1.1Case.mess?dl=0
but error is the same :(

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