Learning Forum

[PawelTrybus]

In random vibration analysis, Is it possible to get results i.e. directional acceleration in coordinate system other than solution coordinate system? Option to change coordinate system is inactive for random vibration.

[Daniel Shaw]

No.  Random Vibration results cannot be transformed into a local coordinate system because the component results are unsigned. The only valid results system is the solution coordinate system.  

[PawelTrybus]

Daniel thank you for the answer. Although, can you explain more thoroughly? My understanding would be that if we have a vector, because we talk about coordinate systems, we can transform it into some other coordinate system. Isn't it similar to deriving von Mises stress from the random vibrations analysis? I would appreciate if you could help more! Thank you :)