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Finding Stress and Displacement of elements in contact with an analytic rigid body

Finding Stress and Displacement of elements in contact with an analytic rigid body

Finding Stress and Displacement of elements in contact with an analytic rigid body

(OP)
I have an analytic rigid surface indenting onto a deformable body. It all works and I have no errors, however I have to do a stress vs strain graph

I was wondering whether anyone could explain to me how to find the average stress/displacement of all the elements (and only these elements) which come into contact with the rigid punch.

Is there an easy way to do this? Do I have to select every individual element which touches the analytic surface? Thank you for any help

RE: Finding Stress and Displacement of elements in contact with an analytic rigid body

Seems like it might depend on what software you have. But, why would you want to plot an average of what is a very peaked distribution?

RE: Finding Stress and Displacement of elements in contact with an analytic rigid body

(OP)
I realised after I clicked submit that I hadn't mentioned ABAQUS (Is there an edit button which I can't see?)

The reason I want an average is because I have a flat punch going onto a near infinite surface, and the average stress would allow me to look at the behaviour of the surface in general.

The elements by the edge of the punch have a much greater stress on them, however by averaging with the rest of the surface, we are able to gather a clearer picture of how the surface acts under a load.

I know it sounds like a stretch, but it makes sense in terms of the experiment.

RE: Finding Stress and Displacement of elements in contact with an analytic rigid body

i imagine you're doing a material nonlinear FEA ?

i imagine abaqus has a method similar to FeMap for putting a selection of elements into a "group" or region or something.

i'm not so sure that the average stress is telling you much ...

Quando Omni Flunkus Moritati

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