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T1  is the Environment Temperature. Make sure it is set to 70F as per below.

 

Hoop Stress

The hoop stress can be estimated using pr/t. Check this against the corresponding ANSYS result which can be determined by looking at the stress in a direction normal to the symmetry planes.  You can spot check at a couple of locations in the model. 

Bolt Preload

Dragging the Bolt Pretension object under Static Structural to Solution and evaluating results gives the amount by which the bolt has to be shrunk in order to generate the specified preload. See below. The value reported by ANSYS (3.093e-3 in) can be checked using 1D elasticity approximation: dL = (F L)/(E A)

 

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