000004740 001__ 4740 000004740 005__ 20141119144549.0 000004740 04107 $$aeng 000004740 046__ $$k2002-06-02 000004740 100__ $$aAsteris, Panagiotis G. 000004740 24500 $$aNONLINEAR ANALYSIS USING REGULAR YIELD SURFACE 000004740 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference 000004740 260__ $$bColumbia University in the City of New York 000004740 506__ $$arestricted 000004740 520__ $$2eng$$aIn this paper, a new methodology is presented to non-linear analysis of masonry shear wall under biaxial stress state using the finite element method. The methodology focuses on the definition / specification of the yield surface for the case of anisotropic masonry under biaxial stress state, as well as on the numerical solution of this non-linear finite elements problem. Specifically, in order to define the yield surface we use a cubic tensor polynomial, whereas we use the initial stress method in order to solve the elasto-plastic problem. In addition, novel computer code of finite elements has been developed in order to apply the method of elasto-plastic analysis of plane masonry wall. The main advantages of the method can be summarized as follows: a) The plasticity equations through a regular surface leads to the elimination of the problem that occurs by the use of singular surface, and b) It is clearly shown that the non-linear behavior of masonry is strongly affected by the yield criterion. 000004740 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb. 000004740 653__ $$aComputer code, masonry, non-linear analysis, regular yield surface, shear wall 000004740 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002 000004740 720__ $$aAsteris, Panagiotis G. 000004740 8560_ $$ffischerc@itam.cas.cz 000004740 8564_ $$s596780$$uhttps://invenio.itam.cas.cz/record/4740/files/257.pdf$$yOriginal version of the author's contribution as presented on CD, . 000004740 962__ $$r4594 000004740 980__ $$aPAPER