ABSTRACT
Stress recovery is an important part of the stress analysis in the FEM computations and can improve both accuracy and rate of convergence of computed stress fields. Satisfying both equilibrium and boundary conditions improves the results. In this contribution, a stress recovery technique using Trefftz (T-)interpolation polynomials and taking into account also the static boundary conditions (b.c.) in the most frequently used displacement FEM formulation is presented. A special kind of interpolation polynomial is used for elements on curved boundaries.