Abstract
Variational inequalities play an important role in many applications and are an active research area. Optimal a priori error estimates in the natural energy norm do exist, but only very few results are known for different norms. Here, we consider as prototype a simple Signorini problem, and provide new optimal order a priori error estimates for the trace and the flux on the Signorini boundary. The a priori analysis is based on a continuous and a discrete Steklov–Poincaré operator, as well as on Aubin–Nitsche-type duality arguments. Numerical results illustrate the convergence rates of the finite-element approach.
Original language | English |
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Pages (from-to) | 1072-1095 |
Number of pages | 24 |
Journal | IMA Journal of Numerical Analysis |
Volume | 36 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2016 |
Fields of Expertise
- Information, Communication & Computing