Re:stress output values
- Olga
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7 years 8 months ago #8728
by Olga
Re:stress output values was created by Olga
Hi, I need some help with Salome and code-aster.
I have to perform stress linearization based on ASME Boiler and Pressure Vessel Code (Section 8 Division 2), so I need to put in my model in Salome-meca Stress Classification Lines (SCL) and I have no idea how to do that, I 'm new to working with this program, after that I need to get the local stress tensors along the SCL and the resultant bending and membrane stress intensities using Code- Aster. Do you know the code to obtain de stress tensor in each node of my stress classification line?
PLEASE HELP ME.
It's for my internship.
I have to perform stress linearization based on ASME Boiler and Pressure Vessel Code (Section 8 Division 2), so I need to put in my model in Salome-meca Stress Classification Lines (SCL) and I have no idea how to do that, I 'm new to working with this program, after that I need to get the local stress tensors along the SCL and the resultant bending and membrane stress intensities using Code- Aster. Do you know the code to obtain de stress tensor in each node of my stress classification line?
PLEASE HELP ME.
It's for my internship.
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7 years 8 months ago #8732
by Claus
Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
Replied by Claus on topic Re:stress output values
Hi.
You are going to have to be more specific on what you want. Throw up a sketch of what you want, since Im not familiar with the ASME standard.
/C
You are going to have to be more specific on what you want. Throw up a sketch of what you want, since Im not familiar with the ASME standard.
/C
Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
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7 years 8 months ago #8733
by Olga
Replied by Olga on topic Re:stress output values
Hi, sorry, I will be more especific.
I need to get the stress tensor (6 stresses component) for each node of my mesh. All I need is the command in code-aster to get that, I have to put them in a table.
I need to get the stress tensor (6 stresses component) for each node of my mesh. All I need is the command in code-aster to get that, I have to put them in a table.
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7 years 8 months ago #8734
by Claus
Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
Replied by Claus on topic Re:stress output values
Okay, then you should extract and print the 'SIGM' component.
To print all values of all nodes in the RESU file, create a new command in EFICAS: new command-> IMPR_RESU, select FORMAT/RESULTAT and select the result of your calculation. Under 'b_extrac' select NOM_CHAMP->SIGM_NOEU.
Under 'b_topologie' you can limit the extraction to e.g. a node group instead of extracting all nodes.
It is also possible to print the values to a seperate file, but that is beyond this post.
/C
To print all values of all nodes in the RESU file, create a new command in EFICAS: new command-> IMPR_RESU, select FORMAT/RESULTAT and select the result of your calculation. Under 'b_extrac' select NOM_CHAMP->SIGM_NOEU.
Under 'b_topologie' you can limit the extraction to e.g. a node group instead of extracting all nodes.
It is also possible to print the values to a seperate file, but that is beyond this post.
/C
Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
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7 years 8 months ago #8735
by Olga
Replied by Olga on topic Re:stress output values
Thank you so much!!
That really help me a lot.
But I have another question, sorry, I am new usser.
In my code, at the module of CONTRAINTE AND CRITERES, what means
(SIGM_ELNO','SIGM_NOEU','SIEF_ELGA','SIGM_ELGA','EFGE_ELGA) and (SIEQ_ELNO','SIEQ_NOEU','EPEQ_ELGA','EPMQ_ELGA','SIEQ_ELGA)
RESU=CALC_CHAMP(reuse =RESU,
RESULTAT=RESU
CONTRAINTE=('SIGM_ELNO','SIGM_NOEU','SIEF_ELGA','SIGM_ELGA','EFGE_ELGA',),
CRITERES=('SIEQ_ELNO','SIEQ_NOEU','EPEQ_ELGA','EPMQ_ELGA','SIEQ_ELGA',),);
Thanks for your help.
That really help me a lot.
But I have another question, sorry, I am new usser.
In my code, at the module of CONTRAINTE AND CRITERES, what means
(SIGM_ELNO','SIGM_NOEU','SIEF_ELGA','SIGM_ELGA','EFGE_ELGA) and (SIEQ_ELNO','SIEQ_NOEU','EPEQ_ELGA','EPMQ_ELGA','SIEQ_ELGA)
RESU=CALC_CHAMP(reuse =RESU,
RESULTAT=RESU
CONTRAINTE=('SIGM_ELNO','SIGM_NOEU','SIEF_ELGA','SIGM_ELGA','EFGE_ELGA',),
CRITERES=('SIEQ_ELNO','SIEQ_NOEU','EPEQ_ELGA','EPMQ_ELGA','SIEQ_ELGA',),);
Thanks for your help.
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7 years 8 months ago #8737
by Claus
Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
Replied by Claus on topic Re:stress output values
NOEU means node. ELNO means element. ELGA means Gauss point.
Values at nodes and elements are extrapolated from the Gauss points. You will find out, that e.g. Von Mises stress can become negative on nodes, which is meaningless. Gauss points store the exact calculated value, but plots with ELGA can visually be a little crude and may not be precisely at the coordinates where you wish to obtain a value.
/C
Values at nodes and elements are extrapolated from the Gauss points. You will find out, that e.g. Von Mises stress can become negative on nodes, which is meaningless. Gauss points store the exact calculated value, but plots with ELGA can visually be a little crude and may not be precisely at the coordinates where you wish to obtain a value.
/C
Code_Aster release : STA11.4 on OpenSUSE 12.3 64 bits - EDF/Intel version
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