I have a generalized axisymmetric model of a steel seal with a ceramic film face. I want to know the shear in the circumferential direction at the interface between the steel and ceramic. This should be induced by friction with the fixed half of the seal, which I have modeled as an analytical rigid body. I have defined a simple tangential friction contact, with a friction coefficient of 0.2, but the values for shear in the circumferential direction in my model look like numerical noise. Does anyone have any ideas on how to define the friction/contact in Abaqus for an axisymmetric model in the circumferential direction (meaning shear out of plane of the model)?
A generalized axisymmetric model (uses elements CGAX4R in Abaqus) allows for non-zero σrθ as long as each plane can be assumed to deform in the same way, so no, a full 3D analysis is not needed. The difficulty is that for some reason contact does not get established correctly, and the parts move through each other. There is no overclosure, actually the parts start with some clearance, but still contact is not established. Is there a particular algorithm or contact setting that needs to be used when the parts start out of contact, but then move into contact?
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