Sum of Three Principal Stress (S1+S2+S3) (ASME VIII Div 2 Section 5.3)

[tibor121774]

Hi Simulators!!!!

Is there a part in Autodesk Simulation Mechanical program which shows the result of sum of three principal stresses (S1+S2+S3) to be compared against ASME VIII Div 2  Section 5.3 requirement (Allowable of 4S). As of now I'm just manually doing it at a node that shows the Maximum Principal Stress and just add it manually for that particular node. It would be convenient if there's a part of the program for this type of result which covers all nodes and show the maximum result.

Many Thanks....Cheers!!!!

[ilyas_drawbridge · Accepted solution]

Hi Tibor,

I don't think there is a button for those results in Sim Mech. However, the custom results tool should be able to add up the three values and display it as a contour plot. With that, you can directly probe the sum of the stresses directly.

A few things to note, the custom results need to be viewed using the legacy UI. To disable the ribbon, go to Tools > Application Options > General Information and uncheck Ribbon style. You can then view the results. I hope Autodesk fixes this soon as it has been a known issue for quite some time.

Regards

Ilyas

[tibor121774]

Thanks a lot Ilyas...It's a big help....

[napoleonm]

Sorry, if it is a bit late.

But yes, you can create those values using "Others results"---> "Custom result".

create a function for sigma 1 other for sigma 2 and another for sigma 3, then create another function that does the adition.. and that is it.

here how:

Name: S1 // Value: Stress //Operations:  Maximum Principal//Type: Scalar // defined at:Element-nodal//Units: N/(mm^2)

Name: S2 // Value: Stress //Operations:  Intermedialte Maximum //Type: Scalar // defined at:Element-nodal//Units: N/(mm^2)

Name: S1 // Value: Stress //Operations:  Minimum Principal//Type: Scalar // defined at:Element-nodal//Units: N/(mm^2)

S1+S2+S3