Extraordinary damping in nature-inspired, architected interpenetrating phase composite meta-structures

This dataset contains the raw data and processing scripts associated with the publication Extraordinary damping in nature-inspired, architectedinterpenetrating phase composite meta-structures. It provides full access to the experimental modal analysis results and the computational workflows used to derive the key findings reported in the manuscript. A brief description of each file and folder is provided below. The notebook Bar_Box_Plots.ipynb is used to generate all bar and box plots presented in the paper without additional graphic embellishment. It includes the modal analysis data (natural frequencies and damping ratios), bending stiffness, and surface area values of all investigated samples. Each section of the notebook can be executed independently to reproduce the corresponding figures. For readers interested in the detailed procedures used to extract damping ratios and modal parameters using the four methods introduced and compared in the Methodology section (Section 4.3 and Table 2 of the paper), the compressed folder MA_Calculation_4methods.zip is provided. This folder contains the original frequency response function (FRF) data in .mat format, exported from DEWESOFT Modal Analysis testing, together with a dedicated README file that explains step-by-step how the reported values were obtained and how the CMIF curves were generated. The gain comparison results shown in Supplementary Figure S1 can be reproduced using the contents of Gain_Comparison.zip, in which the F_Acc_Disp_Plots.m serves as the main MATLAB script and is accompanied by the function script sweep_accel_to_disp.m. The corresponding input data files are compiled separately in the F_Acc_Disp_ExcelData.zip folder. The Ashby plot shown in Figure 6a can be reproduced using the contents in AshbyPlots.zip, where the notebook file AsbyPlot_VW_MA.ipynb is the main script, associated with the data required in AshbyData.xlsx. The range of the monolithic mateial envelopes and scattered data points extracted from literature have already been embedded in the code. The Python notebooks are compatible with Google Colab and local Python installations (Python>3.8) with commonly used libraries. The MATLAB scripts were developed and tested using MATLAB R2021a or later. By providing the raw experimental data together with the full analysis workflows, this repository is intended to support transparency, reproducibility, and reuse of the results, enabling readers to independently verify the reported findings and to extend the analysis to related architected material systems.