A Numerical Adaptive Algorithm for the Obstacle Problem
نویسندگان
چکیده
This paper concerns an adaptive finite element method for the elliptic obstacle problem.We consider the formulation of the problem as an elliptic variational inequation.The adaptive algorithm (modified Uzawa adaptive method)we construct is based on a combination of the Uzawa method associated with the corresponding multivalued operator and a convergent adaptive mehtod for the linear problem. As our main result we show that if the adaptive method for the linear problem is convergent, then the adaptive modified Uzawa method is convergent as well. A numerical experiment shows the studied properties of the method.
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