When I should use average stress values or Maximum stress values in a model

[mekafime]

Hi,
I have a plot of stress values in a model but the results are different in average and maximum...

 

[STpipe]

By maximum I assume you mean the unaveraged element stresses? By average, I assume you're referring to the element mean stresses?

Unfortunately, I think you need to provide more information on what it is you're trying to analyse and what your exact question is before anyone can help you.

 

[mekafime]

Hi,
In my model I have the next plot Stress-Strain
the curve of maximum values isn't constant
The material of my model is elong 23% then I must choice 660 MPa about the plot curve, but the section curve has a variation between 600 - 700 MPa,
How can I choose the most accurate result? If I see the average stress results curve, I could easily choose the stress at 23% strain. (Maybe I thought Can smooth curve? o to improve el model ..)

 

[STpipe]

You still haven't provided an answer on what it is you're trying to model, or what you mean by maximum or average stress, or where you're extracting the stresses from. Right now all you're presenting is data with no context.

 

[mekafime]

Hi Im so sorry
I m modeling a k joint tubular , use simmetry for model , and I need to analyze the plot stress-strain (elong to break 23%) then I will try comprobate displacement with standards.