Data Set on Granite Weakening by Alternating Voltage Excitation: 2D Numerical Analysis Using Cohesive Interface Elements and a Fatigue Damage Model

This dataset supports the publication [1]. It contains experimental and numerical data used in the development and validation of the 2D mesoscale finite element model presented in [1], which investigates the progressive weakening of granite under high-voltage alternating current (HV-AC) excitation. Contents Experimental data from nanoindentation, dynamic tension tests, dynamic Brazilian Disc (BD) tests, and quasi-static compression experiments. Synchrotron X-ray Phase-Contrast Imaging (XPCI) videos showing the fragmentation process in granite discs under dynamic tension. Numerical simulations corresponding to all test conditions, including cohesive interface modelling to modell the progressive weakening of the rock. Synthetic microstructures (.mat files and HTML summaries) representing the granite’s grain-scale structure. MATLAB scripts to regenerate all plots, figures, and animations included in [1]. Folder Overview /SPHB_BD_test_on_untreated_samples: Raw FEM results for untreated granite under dynamic tensile loading. /SPHB_BD_test_on_AC_treated_samples: Raw FEM results for HV-AC treated specimens. /dynamic_tension: Experimental–numerical comparisons, including: MATLAB .fig files with numerical simulation and experimental results, Animations of the simulated and experimentally captured fragmentation process in .gif and .avi formats, and The script ploting_curves.m to regenerate all visual content. /EXP_FIGURES: Experimental results from dynamic Brazilian Disc tests, including high-resolution XPCI videos of real crack propagation. /fatigue: Fatigue model validation plots, and supporting script all_SN_PLOTER.m. /microstructures: Synthetic microstructure data files used in the mesoscale simulations. /nanoindentations: Nanoindentation results used to estimate the mechanical properties of granite phases. /quasistatic_compression: Experimental and numerical results from low strain-rate compression tests. Usage Requirements MATLAB (recommended version: R2021a or later). Key scripts: ploting_curves.m, all_SN_PLOTER.m. NoteThis dataset complements the results presented in [1]. It is not standalone and must be used alongside the publication for full understanding of the modelling approach, experimental procedures, and interpretation of the data. References [1] A. Rubio et al., “Weakening of granite by alternating voltage excitation of dispersed quartz: A 2D numerical analysis based on cohesive interface elements with a fatigue damage model,” International Journal of Impact Engineering, 2025.本数据集支撑文献[1]的发表工作，收录了用于开发与验证文献[1]中提出的二维细观有限元模型的实验与数值数据，该模型针对高压交流（HV-AC）激励下花岗岩的渐进弱化效应开展研究。 ## 数据集内容 包含纳米压痕、动态拉伸试验、动态巴西圆盘（BD）试验以及准静态压缩试验的实验数据。 同步辐射X射线相位衬度成像（XPCI）视频：记录动态拉伸工况下花岗岩圆盘的破碎过程。 覆盖所有试验工况的数值模拟数据，包含用于模拟岩石渐进弱化过程的黏结界面建模内容。 代表花岗岩颗粒尺度结构的合成微结构文件，包含.mat格式文件与HTML汇总文档。 用于复现文献[1]中所有绘图、图表与动画的MATLAB脚本。 ## 文件夹概览 /SPHB_BD_test_on_untreated_samples：未处理花岗岩动态拉伸加载下的有限元原始结果 /SPHB_BD_test_on_AC_treated_samples：经高压交流处理的试样的有限元原始结果 /dynamic_tension：实验-数值对比内容，包括： 包含数值模拟与实验结果的MATLAB .fig格式文件， 模拟与实验捕获的破碎过程动画（格式为.gif与.avi），以及 用于复现所有可视化内容的脚本ploting_curves.m。 /EXP_FIGURES：动态巴西圆盘试验的实验结果，包含真实裂纹扩展的高分辨率XPCI视频。 /fatigue：疲劳模型验证图表与配套脚本all_SN_PLOTER.m。 /microstructures：细观模拟中使用的合成微结构数据文件。 /nanoindentations：用于估算花岗岩各相力学性能的纳米压痕结果。 /quasistatic_compression：低应变率压缩试验的实验与数值结果。 ## 使用要求 推荐使用MATLAB R2021a及以上版本。 核心脚本：ploting_curves.m、all_SN_PLOTER.m。 ## 注意事项 本数据集为文献[1]所呈现结果的配套补充数据，并非独立可用数据集，需结合原文献一同使用，方能完整理解建模方法、试验流程与数据解读方式。 ## 参考文献 [1] A. Rubio 等，“分散石英交流电压激励弱化花岗岩：基于黏结界面单元与疲劳损伤模型的二维数值分析”，《国际冲击工程学报》，2025年。