Hava Kireci Harcı Kullanılarak Üretilen Tarihi Yığma Duvarlarda Bünyesel Modelleme

Abstract

In this study, a constitutive modeling technique for three-dimensional nonlinear finite element analysis of unreinforced historic masonry walls under in-plane loading has been proposed. The complex mechanical behavior of the historical masonry buildings is subjected to the composite characteristics of the materials. Mortar is the vulnerable part of the masonry walls composed with masonry constituents like stone or bricks and mortars with different contents. It is supposed to reflect the vulnerable behavior of the mortar to the modeling study. In this context, a ‘fictitious joint material’ approach has been defined. The proposed model was derived from an elasto-plastic damage approach that adapted calibrating the parameters of Oliver's damage model together with the modified von-Mises yield criterion for the masonry constituents. The modified von-Mises yield criterion considering the compressive and tensile strength of masonry constituents separately was used for plastic strain and the damage model Oliver et al. (1990) was used for damage strain especially for tensile effects. Numerical results and modes of failure are compared with experimental data