## Robot Structural Analysis

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# Sum of harmonic loads - square rod of the sum of squares

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Hi!

I have static loads (#1 to #13 on attached picture) and harmonic loads (#15 to #17).

Is it possible in Robot to generate Automatic Combination, where the sum of harmonic loads will be calculated as the square root of the sum of squares:

Wp3 = √[(#15)^2+(#16)^2+(#17)^2]

Thank you in advance!

Solved! Go to Solution.

# Re: Sum of harmonic loads - square rod of the sum of squares

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Hi, maybe this help you:

http://docs.autodesk.com/RSA/2012/ENU/filesROBOT/G

# Sum of harmonic loads - square rod of the sum of squares

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Hi, Romanich!

Thank you for reply! It looks like the answer I need...

But is it possible to use this Quadratic Combination at the same time with Automatic Combinations?

I meen that this CQC will be as one of the loads in the table of combinations, generated automatically.

As far as I remember, we can use either Manual or Automatic...