Mining extremal property from a large 2D truss metamaterial database

Our project aims to explore the design space of truss metamaterials. Truss metamaterials attract considerable interest for their exceptional performance and prospects for engineering applications. These databases are generated by a generic method under potential publication. These databases comprise over 1.8 million distinctive entries, especially including numerous unprecedented metamaterials. These databases will strongly advance the emerging data-driven design strategies. <strong>Dataset S1 (.csv format).</strong> Entire architecture database of the designed metamaterials, including coordinates of flattened node-sets and elements of flattened adjacency matrices within building blocks.<strong>SubDataset for archiectures in eleven metamaterial groups ("group name"-features.csv).</strong> Eleven separated databases correspond to eleven metamaterial groups for convenient access. <strong>Dataset S2 (.csv format).</strong> Entire mechanical property database including Young’s moduli, Poisson’s ratios, shear modulus and isotropy index.<strong>SubDataset for mechanical properties in eleven metamaterial groups ("group name"-mechanical property.csv).</strong> Eleven separated databases correspond to eleven metamaterial groups for convenient access. <strong>The dataset is intended for reviews of potential publications and should not be cited or used before public publication.</strong>

本项目旨在探索桁架超材料（truss metamaterials）的设计空间。桁架超材料凭借其优异的性能与广阔的工程应用前景，受到了广泛关注。本数据集通过通用方法生成，目前处于拟发表阶段。该数据集包含超过180万个独特条目，其中涵盖了大量前所未有的超材料结构，将有力推动新兴的数据驱动设计策略发展。
**数据集S1（.csv格式）**：所设计超材料的完整结构数据库，包含构建单元内扁平化节点集的坐标值，以及扁平化邻接矩阵的元素信息。
**11个超材料组的结构子数据集（命名格式为"组名-特征.csv"）**：为便于检索，共设置11个独立数据集，分别对应11个超材料组。
**数据集S2（.csv格式）**：完整的力学性能数据库，包含杨氏模量（Young’s moduli）、泊松比（Poisson’s ratios）、剪切模量（shear modulus）以及各向同性指数（isotropy index）。
**11个超材料组的力学特性子数据集（命名格式为"组名-力学性能.csv"）**：为便于调用，共设置11个独立数据集，分别对应11个超材料组。
本数据集仅用于拟发表论文的评审用途，在正式公开出版前不得被引用或使用。