Issue 50

F. Jafari et alii, Frattura ed Integrità Strutturale, 50 (2019) 209-230; DOI: 10.3221/IGF-ESIS.50.18 212 this article is of high relevance and very similar to the present work. In other words, it is the only article, which has the most common ground with our field of study. ABAQUS has been used for modeling in this paper. Then, the results of the present study were compared with those of Rezayifar and are in close agreement with the study by Rezayifar [8]. Next, EL- Centro as one of acceleration histories, which has existed in the reference research, was chosen for the present paper. Ultimately, Matlab analyses were compared with FEM analyses and the results showed that Matlab could predict FEM result in the best way, because the results of the two methods are close to each other. ANFIS results were verified with ABAQUS and experimental research using neural network for estimating the maximum displacement and acceleration value, which were obtained by ABAQUS.  The effect of the panels' number on the frame seismic behavior is investigated. In different frames of the building, the frame seismic performance has been evaluated by applying two-three panels.  The shotcrete material is varied and the effect of Young's modulus in shotcrete is investigated. First, the change in the frame shape is discussed for the conventional concrete and then by changing the shotcrete material, the frame performance is studied.  The height of the point is varied and the relationship between Young's modulus and height on the displacement and acceleration of these points is elaborated. ABAQUS VERIFICATION n 2000, Rezayifar et al [8] studied the dynamic behavior of 3D sandwich panels in a single story system, for which shaking table testing was used and the 3D-panel wall was modeled using Ansys. In this study, El-Centro (Imperial Valley Station – 1940) acceleration was chosen as a lateral load in X and Y direction and the result of FEM analyses were compared with the experimental work. In this work, concrete sandwich panels were used for making 3D-panel house. The panel dimension was 3.350* 3.30. In addition, support conditions were assumed in the bottom of the panels. The building plan as well as its height and details are summarized in the reference paper, which has been applied for modeling the building in the present research. The main materials (steel bar, concrete panel sand polystyrene) were assumed according to the specifications reported by Rezayifar [8]. Rezayifar et al applied various accelerations on the sandwich panels, but in this research, only EL- Centro acceleration was used as a seismic load. The research conducted by Rezayifar et al is the only comprehensive study, which has worked on sandwich panel house and evaluated its performance under seismic load. Displacement and acceleration were measured in some specific points in the experimental and FEM model in two directions. According to Rezayifar paper, DIS03 is a point located on the top of the northern wall and is used for measuring displacement in the X direction, while DIS01 is located on the western wall and is used to measure displacement in the Y direction. Fig. 2 illustrates the acceleration in both directions (X and Y). These two points have been used to validate this study, where the building has been modeled in ABAQUS software and the displacement has been obtained in the two directions. The results revealed a good agreement between the present research and the experimental work of Rezayifar. Fig. 2 presents the ground acceleration records applied into the structure and Fig. 3 presents the structure mesh of one storey sandwich panel. Fig. 4 compares displacements in this study in both directions with Rezayifar. Figure 2 : Acceleration time history of El Centro -1940 record (a) x direction, b) y direction) [18]. I