Résumé en anglais
An approach to stress analysis of masonry, considered as a "no tension material" is presented in this communication. The model used is a reticular model which permits the solution of problems by studying the state of equilibrium of complementary energy in conjunction with a mathematical system of inequalities. The problem we have to solve is a classical problem of quadratic programming which becomes one of linear complementarity according to the Kuln and Trucker theorem: it may therefore be solved by the "simple method"