| Summary: | This data article comprises post-processed data to investigate the non-linear dynamic behavior of the CEA-beam benchmark structure that is a clamped–clamped steel beam with non-ideal boundary conditions. Experiments have been performed on the CEA-CESTA laboratory.The data provided include output measurements for the nonlinear dynamic behavior of the CEA-beam (i.e. the displacement amplitudes for each harmonic component at the middle of the beam), as well as the complete input acceleration signal harmonics amplitude.All the results from this data will help researchers and engineers in proper analysis of the nonlinearities of the clamped–clamped beam and the effect of the non-ideal input signal and advanced understanding of links between different excitation signal and the multi-harmonic responses of the CEA-beam. One of the main original contribution is to share the data sets to give the opportunity to researchers for testing and validating analytical or numerical models of a nonlinear beam with non-ideal boundary conditions and subjected to low and high levels of excitation signal.This Data in Brief article is an additional item directly alongside the following paper published in the Elsevier journal Communications in Nonlinear Science and Numerical Simulation: M. Claeys, J-J. Sinou, J-P. Lambelin and B. Alcoverro, Multi-harmonic measurements and numerical simulations of nonlinear vibrations of a beam with non-ideal boundary conditions, Communications in Nonlinear Science and Numerical Simulation, 19(12), 4196–4212, 2014. https://doi.org/10.1016/j.cnsns.2014.04.008. Keywords: Structural dynamics, Nonlinear vibration, Multi-harmonic components, Beam system, Large displacements
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