Stress from FEA analysis of propeller

[sachin46]

Dear All,
I am working on project called "strength analysis of highly skewed propeller", where I have to find maximum and minimum stress on propeller blade from structral analysis in ANSYS. The load condition considered in the analysis is Free sailing ahead condition .
I am confused with stress componenet to use from ansys. I have considered Von Mises stress for calulcation weather it is right or I have to use principal stress for the calculation.
If anybody has an Idea ,kindly share.
Thanking you in Advance.
Regards,
sachin

 

[rb1957]

personally, for a solid shape like a propeller blade, I'd use von mises.

another day in paradise, or is paradise one day closer ?

 

[corus]

It depends on how you're assessing the stresses. If it's a yield criteria then use Von Mises or more conservatively, Von Tresca. I'd check if there is a design code to which you should refer to for assessing stresses.

 

[testing]

The material used will influence the failure criteria used as well. Von mises doesn't make much sense for a laminate