Data underlying the publication: 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</strong><strong style="background-color:rgb(255, 250, 234);"> in eleven metamaterial groups </strong><strong>("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>

本研究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综合性能与广阔的工程应用前景，受到学界与工业界的广泛关注。本数据集采用通用方法生成，目前处于拟正式发表阶段。该数据集包含超过180万条独特构型条目，涵盖大量此前未被报道的超材料设计，将有力推动新兴数据驱动设计策略的发展与落地。<strong>数据集S1（.csv格式）</strong>：收录设计超材料的完整构型数据库，包含构建单元内扁平化节点集的坐标，以及扁平化邻接矩阵的元素信息。<strong>11个超材料组构型子数据集（命名格式为"组名-特征.csv"）</strong>：设置11个独立数据集分别对应11个超材料组，便于用户快速检索与调用。<strong>数据集S2（.csv格式）</strong>：收录完整的力学性能数据库，包含杨氏模量、泊松比、剪切模量与各向同性指数。<strong>力学性能子数据集</strong><strong style="background-color:rgb(255, 250, 234);">（针对11个超材料组）</strong>（命名格式为"组名-力学性能.csv"）：设置11个独立数据集分别对应11个超材料组，便于用户快速检索与调用。<strong>本数据集仅用于拟发表论文的同行评审环节，在正式公开出版前，不得被引用或用于其他用途。</strong>