I have an analysis of our client where is implied a combination method called Scalar. I'm confused to get the similar values from Caesar. In Autopipe the one that comes closest is the Abs method, but it does not reach the values shown by our client. I add an image of customer combinations,
I hope someone can help me. Thanks in advance.
Greetings,
The results from AutoPIPE will generally be close to that of other competitor applications, but will never be 100% exact. I have no knowledge of the combination that this competitor application is making. You would need to provide exact details of this combination, the calculations being done, etc.. for us to evaluate and suggest a comparable AutoPIPE combination.
We can and will defend the accuracy of AutoPIPE's results. Appears that someone is implying that AutoPIPE is incorrect because our results do not match those of other applications. I advise you to think about how they ought to line up with our results.
Regards, Mike Dattilio Design Analysis Engineering Group Senior Analyst Bentley Systems Inc=============================================================================
Thank you Mike Dattilo,
I trust the accuracy of Autopipe (that's why we have the software)... I would like to prove to the client that our calculation is correct, and show him a similar combination as the other software has.
The script of the other software say:
"Indicates a signed combination of displacement, force, and stress level. This method combines the displacement vectors, force vectors, and stress scalars. Displacements are the algebraic combination of the displacement vectors. Forces are the algebraic combination of the force vectors. Stresses are the scalar combination of the stress scalars.
The combination of displacements and forces are the same for ALG and Scalar methods. The combinations of stress levels are different between ALG and Scalar methods because the stresses are calculated from the combined forces in the ALG method and summed in the Scalar method.
For example:
Load Case 1: bending stress = 100 psi, due to X-momentLoad Case 2: bending stress - 100 psi, due to Z-moment
Algebraic (vector) sum = square root of (100*100 + 100*100) = 141.4 psiScalarsum = 100 + 100 = 200psi
Scalar is typically used to sum (SUS + OCC) code stresses.
Could you recommend one combination method?, I'll appreciate your answer.
Answer Verified By: Guillermo Navarro
When calculating a Code stress combination, the user can specify what level the load cases are combined at. Open a Code combination, notice the column for M/S. This setting specifies the the level at which the contributing component are to be combined: Moments/force level or the Stress level. Suggest to review AutoPIPE's help for complete details on this topic.