Elements: Curating and Disseminating Solid Mechanics Based Benchmark Datasets

从汽车安全到外科手术规划，预测材料在载荷作用下的力学行为是工程设计中必不可少的一步。然而，目前预测力学行为的方法通常非常缓慢，单个模拟可能需要几个小时甚至几个月的时间才能运行。在这一限制的推动下，最近的研究利用机器学习技术来快速预测工程系统的行为，并直接从数据创建预测模型。尽管这些新兴技术具有造福社会的巨大潜力，但目前从机械数据创建机器学习模型的策略仍然是临时的。这一研究项目的目标是通过向更广泛的社区传播基于力学的大型数据集和相关的科学资源来改变这种情况。此外，该项目为更广泛的机械界向数据和代码传播做法的文化转变提供了资源，这将使机械界研究界能够更有效地取得集体研究进展。这项工作的目标是创建和传播关注两大类力学挑战的开源基准数据集：非线性材料行为(例如，工程复合材料的断裂)和非线性结构行为(例如，工程超材料的大变形行为和屈曲)。结合数据集传播，这项工作围绕新出现和尚未解决的领域定义和传播核心挑战问题，在这些领域，方法学创新将显著推动固体力学领域的发展，例如：(1)非线性力学的全场预测，(2)用于力学预测的复杂几何表示，(3)特定于力学的分布外概括，以及(4)力学问题中的不确定性量化。最后，该项目包括一个“开放获取力学数据集网站和教育资源”组件，用于整理来自更广泛研究社区的开放获取力学数据集。该奖项由NSF高级网络基础设施办公室颁发，由NSF土木、机械和制造创新部门联合支持。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

From automobile safety to surgical planning, predicting the mechanical behavior of materials under loading is an essential step in engineering design. However, current approaches to predicting mechanical behavior are often very slow, where single simulations can take hours or even months to run. Motivated by this limitation, recent research has leveraged machine learning techniques to rapidly predict the behavior of engineered systems and create predictive models directly from data. Though these emerging techniques have enormous potential to benefit society, current strategies for creating machine learning models from mechanical data remain ad hoc. The goal of this research project is to change this through disseminating large mechanics-based datasets and associated scientific resources to the broader community. In addition, this project provides resources for a cultural shift within the broader mechanics community towards data and code dissemination practices that will allow the mechanics research community to make collective research progress more efficiently. The objective of this work is to create and disseminate open source benchmark datasets that focus on two broad classes of mechanical challenge: nonlinear material behavior (e.g., fracture of engineered composites), and nonlinear structural behavior (e.g., large deformation behavior and buckling of engineered metamaterials). In conjunction with dataset dissemination, this work defines and disseminates core challenge problems around emerging and unresolved areas where methodological innovation would significantly move the solid mechanics field forward such as: (1) full-field prediction for nonlinear mechanics, (2) representation of complex geometries for mechanical prediction, (3) mechanics-specific out of distribution generalization, and (4) uncertainty quantification in mechanical problems. Finally, this project includes an “Open Access Mechanics Dataset Website and Educational Resource” component to collate open access mechanics datasets from the broader research community.This award by the NSF Office of Advanced Cyberinfrastructure is jointly supported by the NSF Division of Civil, Mechanical and Manufacturing Innovation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.