Data for a publication "Influence of Geometric and Material Uncertainties on the Behavior of Monostable and Bistable Electromagnetic Energy Harvesters"

This dataset supports the publication “Influence of Geometric and Material Uncertainties on the Behavior of Monostable and Bistable Electromagnetic Energy Harvesters.” It contains simulation scripts, magnetic data, input parameters, and figure-generation files used to analyze how geometric, material, and excitation uncertainties influence nonlinear electromagnetic vibration energy harvesters (EM VEH). The data include results from Finite Element Method Magnetics (FEMM) simulations of magnetic forces for various magnet gaps and coercivity values, combined with a one-degree-of-freedom electromechanical model implemented in MATLAB/Simulink. The model captures the coupling between mechanical, magnetic, and electrical domains and allows evaluation of harvested power, bifurcation behavior, and transitions between monostable, bistable, and chaotic regimes. Included are all MATLAB and Simulink files used to produce the results presented in the manuscript, organized by section (geometry, coercivity, and excitation). Post-processing scripts generate figures such as bifurcation diagrams, asymmetry effects, coercivity influence, and impulsive excitation maps. Each dataset folder contains input parameters, simulation scripts, and output figures in reproducible form. The data can be reused for sensitivity and uncertainty analysis of nonlinear electromechanical systems or for validation of models of tunable magnetic stiffness in energy harvesters. All files are provided under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.