ên13th International Conferenceon Fracture June 16–21, 2013,Beijing, China -6- The boundary condition used to simulate the structure is based in the assumption that the substrate is rigid.Thus, in the boundary between the coating and the substrate the displacements in the y-axis must be equal to zero. The equivalent regions and their very neighborhoodare not considered objects of study, being focus the central regions of the system. The idea would be to avoid disturbances generated at the boundary, which does not produce consistent results, as argued by Saraiva (1998). Table1- Material properties of the coating structure and facade equivalent. Material ElasticityModulus - E (GPa) Thermal Expansion Coefficient - ࢻ (°C-1) Poisson’sRatio - ࣇ Plaster 5,499 11,5 x 10-6 0,2 Mortar 3,562 8,7 x 10-6 0,2 Graut 7,879 4,2 x 10-6 0,2 Ceramic 41,600 6,8 x 10-6 0,2 Eq.Plaster 0,11941 530 x 10-6 0,2 Eq.Mortar 0,07735 400 x 10-6 0,2 Eq.CeramicandGraut 0,78891 310 x 10-6 0,2 Once modeled of the facade, the application ANSYS (1994) is ran to convert it into finite elements. Among the factors contained in the library of ANSYS (1994) the element named PLANE42 was used, which has four nodes having two degrees of freedom per node: the displacements in the directions "x" and "y".The PLANE42 element accepts temperature as charging, and allows inputting parameters such as elasticity modulus, thermal expansioncoefficient of, Poisson's ratio in the materials and structures modeled with the element. Figure 4 - Finite element mesh structure characterizing the coating studied. 6. Results Presentation After insertingnodal temperatures in each nodal layer the model, obtained through the temperature distribution equation, the application ANSYS (1994) is ran again, outputtingthestresses that affect the coating structure. The stresses obtained were: SX to the normal stresses in the x direction; SY to the normal stress in the y direction; SXY for the shear stresses; and S1 and S2 to the principal stresses. According to the above, two constructive situations were studied: using clear ceramic, and using dark ceramic. In each case were evaluated three sections shown in Figure 4: AA ', passing through
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