Resumen de Recent advances in the dual analysis theory

Jean François Debongnie, Pierre Beckers

• The dual analysis concept, which is one of the oldest methods of measuring thediscretization error of finite element models, suffered by its lack of generality in its originalversion. In fact, severe restrictions were imposed to the boundary conditions, excluding anymixed problem.These restrictions, related to an analysis where stiffness play a central role, can beavoided by using the proper reference energy, which is the total complementary energy. Thisleads to convergence curves which are always on the same side of the exact value and whosedistance measures the quality of the analysis.