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Variational principles with nonlinear complementarity and finite-dimensional nonlinear complementarity models for three-dimensional frictional contact problems are established.The existence and uniqueness of the solutions to the finite-dimensional models are proved.A minimum principle is developed and a minimization algorithm is presented.Numerical calculation shows that the algorithm is highly efficient,reliable and promising.
Variational principles with nonlinear complementarity and finite-dimensional nonlinear complementarity models for three-dimensional frictional contact problems are established. Existence and uniqueness of the solutions to the finite-dimensional models are proved. A minimum principle is developed and a minimization algorithm is presented. Numerical calculation shows that the algorithm is highly efficient, reliable and promising.