The present paper deals with the problem of the determination of the in-plane behavior of periodic masonry material. Masonry is considered a composite material obtained as a regular distribution of blocks connected by horizontal and vertical mortar joints. The macromechanical equivalent Cauchy and Cosserat models are derived by means of the homogenization procedure, which make use of the Transformation Field Analysis (FTA) in order to account for the nonlinear effects occurring in the components. The micromechanical analysis is developed considering a Cauchy model for the masonry components. In particular, the linear elastic constitutive relationship is considered for the blocks, while a nonlinear constitutive law is proposed for the mortar joints, accounting for the damage and friction phenomena occurring during the loading history. Numerical applications are performed in order to assess the performances of the proposed models in reproducing the mechanical behavior of the masonry material. In particular, two different masonry textures are considered, remarking their different behavior.Moreover, for one masonry texture, the response is derived considering two possible RVEs. © 2011 Springer-Verlag.
Cauchy and Cosserat equivalent continua for the multiscale analysis of periodic masonry walls / Addessi, Daniela; Elio, Sacco. - STAMPA. - 58 LNACM(2011), pp. 253-268. ((Intervento presentato al convegno 1st International Conference on Computational Contact Mechanics, ICCCM09 tenutosi a Lecce nel 16 September 2009 through 18 September 2009. - LECTURE NOTES IN APPLIED AND COMPUTATIONAL MECHANICS. [10.1007/978-3-642-22167-5_14].
Cauchy and Cosserat equivalent continua for the multiscale analysis of periodic masonry walls
ADDESSI, Daniela;
2011
Abstract
The present paper deals with the problem of the determination of the in-plane behavior of periodic masonry material. Masonry is considered a composite material obtained as a regular distribution of blocks connected by horizontal and vertical mortar joints. The macromechanical equivalent Cauchy and Cosserat models are derived by means of the homogenization procedure, which make use of the Transformation Field Analysis (FTA) in order to account for the nonlinear effects occurring in the components. The micromechanical analysis is developed considering a Cauchy model for the masonry components. In particular, the linear elastic constitutive relationship is considered for the blocks, while a nonlinear constitutive law is proposed for the mortar joints, accounting for the damage and friction phenomena occurring during the loading history. Numerical applications are performed in order to assess the performances of the proposed models in reproducing the mechanical behavior of the masonry material. In particular, two different masonry textures are considered, remarking their different behavior.Moreover, for one masonry texture, the response is derived considering two possible RVEs. © 2011 Springer-Verlag.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.