In Abaqus I have an axisymmetric model of the rotor for a steel seal with a thin ceramic face. I want to get the circumferential stress induced by friction on the rotor face, when the seal is spinning at steady state, to determine interfacial stresses between the main body of the seal and the film. I see that this can be done in Abaqus, but I can't seem to find a way to specify spinning along the correct axis of rotation.
Dear William
Go to the Step modulus then Field Output Manager, enable the "CPRESS" in the "Contact" category to write the contact pressure into the odb file. So you will be able to see the contact pressure resulted from friction in contour mode.
Here's what I found. Abaqus has what is called generalized axisymmetric elements. In regular axisymmetric elements CAX4 no deformations are included in the circumferential direction. In generalized axisymmetric elements CGAX4 circumferential deformation is allowed, as long as all planes can be assumed to deform circumferentially in the same manner. This is used infrequently, so there is not much out there on it in the help forums. Using this type of element it then becomes possible to apply moments about the axis of symmetry, or specify rotational displacements. It also becomes possible to get rotational displacements or moments about the axis of symmetry as outputs. This element type is really convenient if you have an axisymmetric model that experiences circumferential forces as it is spinning. It makes it possible to model this without a full 3D model, and the accompanying larger number of elements.
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