System identification on a nonlinear cantilever beam

The zip file includes the algorithm and data used for system identification of a nonlinear cantilever beam system. The Abaqus .inp file is also included. The data and the algorithm is written in MATLAB and there are two sets of data one is the full FE model data and the other is a simulated experimental data. The mode shape matrix 'Phi' and squared natural frequencies 'Om2' matrix are derived from a prior linear modal analysis and included as '.mat' files.