Marulli Maria Rosaria, Sorrentino Giusi, Menna Fabio, Paggi Marco
IMT School for Advanced Studies Lucca, Piazza San Francesco 19, 55100, Lucca, Italy.
Department of Physics, University of Turin, Via P. Giuria 1, 10125, Turin, Italy.
Sci Rep. 2023 Oct 25;13(1):18298. doi: 10.1038/s41598-023-45425-4.
This work presents the first attempt to create a physics-based digital twin model for predictive analysis of damage evolution during the use of ground stone tools (GSTs) in transformative tasks, encompassing the processing of raw resources for nutritional and non-alimentary purposes. The proposed methodology introduces a digital twin of the GSTs developed from 3D models generated using a photogrammetric technique based on Structure-from-Motion and Multi-View Stereo reconstruction. These models serve as the foundation for the development of the finite element (FE)-based digital twin model of the GSTs that exploits a contact formulation and the phase-field approach to simulate tool damage during pounding and grinding tasks. Defining the initial relative positions of the stones, their mechanical behaviour, and controlling the movement of the active stone in a way as close as possible to the real one, the digital twin model has been devised to evaluate how the surface damage is affected by perturbations in the loading conditions. The simulated damage is compared with the surface traces observed from experiments. The developed digital twin model aims at demonstrating its potentials for the GSTs investigations, as a supporting tool for experiments and for simulated tests on the archaeological records.
这项工作首次尝试创建一个基于物理的数字孪生模型，用于对地面石器工具（GSTs）在变革性任务使用过程中的损伤演化进行预测分析，这些任务包括为获取营养和非食物目的而对原始资源进行加工。所提出的方法引入了GSTs的数字孪生模型，该模型是根据基于运动结构和多视图立体重建的摄影测量技术生成的3D模型开发的。这些模型为基于有限元（FE）的GSTs数字孪生模型的开发奠定了基础，该模型利用接触公式和相场方法来模拟敲击和研磨任务期间的工具损伤。通过定义石头的初始相对位置、它们的力学行为，并以尽可能接近真实情况的方式控制活动石头的运动，设计了数字孪生模型来评估表面损伤如何受到加载条件扰动的影响。将模拟损伤与实验观察到的表面痕迹进行比较。所开发的数字孪生模型旨在展示其在GSTs研究中的潜力，作为实验和考古记录模拟测试的辅助工具。
