Accuracy Assessment of Nonlinear Seismic Displacement Demand Predicted by Simplified Methods for the Plateau Range of Design Response Spectra

Figure 12

Overall results for the optimized N2 method (left) and Lin and Miranda method (right). The 3D surface plot of the global average discrepancy values is flat and low for the optimized N2 method, meaning that the method is all over accurate. The Lin and Miranda method shows similar trend but for low values of strength reduction factors only.