Are there any examples of MPC contact surface-based constraint
using the force-distributed surface constraint method?

Yes, please see the attached ANSYS 10.0 input file. It applies
an out-of-plane moment to the top surface of a block via a
remote pilot node. The reactions verify the applied load.

The most important thing to know is that KEYOPT(4) of the
TARGE170 pilot node element sets the DOFs that remain
active to create the necessary constraint equations for the
MPC contact. I just let the code use whatever it wanted to
create the constraints by keeping the DOFs all active. I also
needed to set KEYOPT(2) to user-defined, so the program
did not automatically constrain the pilot node, as those
DOFs would then be unavailable for the MPC equations.


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