info:eu-repo/semantics/article
Convergence of an adaptive Kačanov FEM for quasi-linear problems
Fecha
2011-04Registro en:
Garau, Eduardo Mario; Morin, Pedro; Zuppa, Carlos; Convergence of an adaptive Kačanov FEM for quasi-linear problems; Elsevier Science; Applied Numerical Mathematics; 61; 4; 4-2011; 512-529
0168-9274
CONICET Digital
CONICET
Autor
Garau, Eduardo Mario
Morin, Pedro
Zuppa, Carlos
Resumen
We design an adaptive finite element method to approximate the solutions of quasi-linear elliptic problems. The algorithm is based on a Kačanov iteration and a mesh adaptation step is performed after each linear solve. The method is thus inexact because we do not solve the discrete nonlinear problems exactly, but rather perform one iteration of a fixed point method (Kačanov), using the approximation of the previous mesh as an initial guess. The convergence of the method is proved for any reasonable marking strategy and starting from any initial mesh. We conclude with some numerical experiments that illustrate the theory.