Hi,
I have to study the contact of a an elastic punch over a rigid plane in Abaqus. The indenter is a cylinder so the shape of the contact area is circular. The plane is large enough to be defined as infinite. I apply a negative gravitionnal normal load.
I am using this simple case to validate my way of defining contact properties, interaction definition and contact controls.
I would like to compare my results to an existing analytical solution. I have been looking in KL Johnson Contact Mechanics and in some articles but I can't find strictly the same case. It is a receding contact (openings exist on the edge of the contact area) but the parts don't have the same shape.
Does anyone know which case of receding contacts I can use as a reference ?
Thanks a lot
Rémi
Strictly saying, following your description, we have the contact of elastic body (not punch) and rigid foundation. You don't show the loading scheme; obviously, the concentrated normal force has been applied in center of elastic cylinder that really produce the edge opening. If known solutions are varies from this statement, possible, it is better to model by FEM another type of receding contact, such as the canonic case of elastic beam contacting with rigid foundation (see analytical solutions of K.L. Johnson and other researchers).
Hi Serge,
thanks a lot for your quick answer.
I have to model this kind of contact because I will have to enhance this model toward a contact between two elastic bodies sliding against eachother when subjected to normal and tangential loadings. I wanted to understand perfectly what is going on on simple models before modeling more complicated things. As you suggest, I think I will try to make cylinder rigid and the plane elastic to compare with the known solution.
In my present model, the load is a gravity on the normal axis. Si it is uniformly distributed over the elastic BODY (thanks for the correction !). I have tested the case of concentrated normal load and I can see some openings appear. In my case though, I expected not to see any opening but I still have some (see the image). It is important for me because it would mean that I have some sliding before applying any transverse load, even when the normal load is uniformly distributed over the contact area.
Thank again.
Rémi
Maybe it can help:
http://www.egr.msu.edu/software/abaqus/Documentation/docs/v6.7/books/usb/default.htm?startat=pt09ch29s02aus114.html
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