After obtaining the result I got double values in some points, what does it mean?

After obtaining the result I got double values in some points, what does it mean?

Anonymous
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After obtaining the result I got double values in some points, what does it mean?

Anonymous
Not applicable

Hi,

I am modeling some shell for my thesis and I got double results in some points, after runing the calculations.

Some times I am getting two values with different sign.

How can I interpretate this values?

Thanks

s295729_1-1609853405873.png

s295729_2-1609853553613.png

 

 

 

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Message 2 of 3

Krzysztof_Wasik
Autodesk Support
Autodesk Support

Hi @Anonymous 

You have generated automatic combinations SLS and ULS. When combinations envelope is selected SLS+, SLS- or  SLS Combinations (the same for ULS) and maps description is on, values for top and bottom envelope are presented.

You will have single description for single load cases selected.



Krzysztof Wasik
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Anonymous
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Hi   thanks for your answer.

 

I understand that I should have an envelope only for moments but why do I have and envelope in Normal forces?

Shouldn’t I have only one force?

And which value and combination should I choose for designing: ULS, ULS + or ULS -?

Lastly is yellow colour in compression (positive value) and blue colour tension (negative values) the in the shell elements in Robot.

 

Please find attached my file.

Thanks

 

 

ULS+ULS+ULS-ULS-ULSULS

 

 

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