Thin disk with hole, torque, thrust and angular velocity??

[beritrep]

Hi,

I'm working on a school project with a jet engine compressor disk, and I have to make an Ansys model of it. I'm rather new to Ansys though, and I was wondering: is there an easy way to model these three?

1. Torque experienced by disk (M) = 1 MNm (outer & inner surfaces; having problems finding out how to apply a moment on a surface..)
2. Maximum thrust (T) = 100 kN, in the z direction (when applying it on the outer surface, it always ends up being radial instead)
3. Maximum design rpm (?) = 1.5 x 10^4 rpm

And how do I set the inner surface's movement to zero? In I-deas (the program I usually use), I can select a surface, independent of the mesh, and I can't find that function in Ansys..

cheers,
Berit

 

[caemaniac]

Hello

Solution to your question

1) Torque as T= Force* Distance from center.Divide this force by 2 and apply it as a couple ie 2 force same in magnitude but opposite in direction at two point on the outer circumference.

2) Thrust Convert Thrust into pressure and apply it over a particular area.

3) convert your rpm into rad/sec and apply it on the model with respect to the co-ordinate system.Check the direction of your couple from question 1 before you apply the direction of rotation.

Regards,
CAE MANIAC