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I have a torque wrench, and need to calculate several parameters.

I need to calculate

- Stress

- Displacement

and

- Force required to reflect the torque rang (2NM - 30NM)

I have ansys (fea) and mathcad (fem) at my disposal to do these calculations, i am just not 100% sure on where to start?

I have done a free-body diagram, and decided that there should be 3.D.O.F, but not sure if there should only be 2?

BUT

My main problem is, how do i model a torque wrench in Ansys? I have the geometry all sorted (i think) but i don't know how one should constrain, or even what set-up should be used? I was thinking of static structure?

Help and a push in the right direction would be most helpful, and i would be most greatful.