mechanical and thermal turbine verification

[marcofa]

I am designing a small jet engine (suitbine attached) and I have to verify the resistance of the material (inconel c713) due to the centrifugal force (125000 rpm) and the thermal regime ( palette 700°c and body of the gradient turbine ).
I must also check the expansions due to the rotation and heat regime to define the tolerances of the hole and the outer blade diam.
I would like to know how to proceed (ansys 14 ) and which form to use.
Mar

 

[aerospace]

Hi.
Unfortunately you risk the hole in the water because with rotation at those temperatures you are talking about creep phenomena...and such crystalline crystalline sliding ansys does not.

 

[Andrea P]

Hi.
ansys has several models for creep analysis, but you may have difficulty finding material data.

First I would recommend a linear static analysis, applying the thermal field and centrifugal force, from which to obtain movements and tension field. later you could go to more complex analysis (e.g. creep and fatigue at low cycles).

Andrea

 

[aerospace]

Come on. I stayed at the prof that during the explanation stopped to what you proposed...that is, thermal field and centrifugal force, but creep did not trust!
good to know that ansys moved towards something more accurate... hopefully:d