Omid Rezaifar - Assistant Professor, Faculty of Civil Engineering, Semnan University, Semnan, Iran
Majid Gholhaki - Assistant Professor, Faculty of Civil Engineering, Semnan University, Semnan, Iran

The current study investigates the hysteresis behavior for combined systems, RC frame, and pre-cast 3D wall sandwich panels, in non-linear material properties. The seismic behavior of building constructed by 3D wall panels is studied for absorb of energy and dissipation of it with material nonlinearities. The results are compared regular bending RC frames to complete box type shotcrete sandwich panels system and present the differences of hysteresis behavior for each system and any of cases with irregularity in vertical stiffness such as soft story. In this study, material nonlinearity simulated with Drucker-Prager failure criteria. Behavior of FEM model verified with experimental result. Seventy-three frames analyzed and result were investigated and compared. Compare of energy dissipation for stories and influence of soft story are presented.

panel structures, dynamic behavior, nonlinear analysis