free boundary problems;
adaptive finite element methods;
a posteriori error estimates;
D O I:
10.1016/0898-1221(96)00030-2
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We derive hierarchical a posteriori error estimates for elliptic variational inequalities. The evaluation amounts to the solution of corresponding scalar local subproblems. We derive some upper bounds for the effectivity rates and the numerical properties are illustrated by typical examples.