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W. Liu, H.A. Mang:
"On Different Approximations of the Tangential Slip and on Node-Smoothing of the Contact Boundary in Contact Analyses";
in: "Proceedings of the Fourth Asia-Pacific Conference on Computational Mechanics", Elsevier Science, Amsterdam, 1999, 423 - 428.

This paper addressed the algorithmic consequences of different definitions of the tangential slip in the context of finite element analyses of frictional contact involving large deformations and presents a method of node-smoothness on discretized contact boundaries. The respective consistent contact matrices are described. Two numerical examples are selected to demonstrate the effect of different definitions of the tangential slip and the node-smoothing method on the numerical analyses.

Keywords: finite element method, consistent contact matrix, tangent slip, node-smoothing method