I'm an intern currently and doing some analytic project in a company. So i am required to determine the gap between 2 contact surface (2 O-rings). I've obtain some result by using "node to node" contact with some commands and also probe "gap". There's some difference between the results and the supervisor want me to find out why is there difference between the gap value. Is there anyway i can find it out? Anyone here know the reason behind the calculations/analysis behind ansys. And is it possible to determine the gap by the deformations of the 2 O-rings. Thanks.