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ERROR NASTRAN CENTRIFGAL FORCES

ERROR NASTRAN CENTRIFGAL FORCES

ERROR NASTRAN CENTRIFGAL FORCES

(OP)
Hi dudes!

I need to study a rotating flapping wing subjected to angular velocity depending on time with Nastran.

I found that Nastran does not calculate correctly the centrifugal forces and deformations in the case of the SOL Transient Dynamic/Time History,
while the forces and deformations are correct in the case of Static Analysis.

What I did was to consider simply a rotating beam.
I put omega_z(t)=-10 (SOL Transient Dynamic) and I realized that the beam has a compression stress instead of having a traction stress due to centrifugal force.

The same analysis using the SOL Static gives correct results

Do you guys have any idea?
Thanks so much

RE: ERROR NASTRAN CENTRIFGAL FORCES

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