Computer simulation for the conductance of a contact interface. II

A global model for contact conductance has been previously proposed, and global behavior of contact conductance was studied by computer simulation based on the finite-element method (see ibid., vol.CHMT-9, p.150-5, June 1986). Another global property is studied, using the same model and method as previously described. The contact conductance of a single conducting spot is higher when the spot exists in the center of a contact interface than when the spot is close to the edges or corners. The fact can be only intuitively understood; however, it is not indicated quantitatively. The conductance of a single conducting spot is computed against the location of the spot in a contact interface, and the numerical results are illustrated. It is clearly shown that the edge effect of interface to conductance is small unless a conducting spot closely approaches the edges.<>