I have come across a problem when trying to measure the rotor low speed shaft bending moment using FAST.
When measuring the shaft bending moment, I noticed that both the rotating and non-rotating bending moments were available in the output options. In this case if I take the vector sum of shaft bending moments in the ys and zs or ya and za directions, shouldn’t the rotating and non-rotating bending moments be the same? However my testing results showed they weren’t the same. /cry
Could someone please tell me what caused them to be different?