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On the Effects of Modeling As-Manufactured Geometry: Toward Digital Twin

机译:关于制造几何形状建模的影响:朝向数字双胞胎

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摘要

A simple, nonstandardized material test specimen, which fails along one of two different likely crack paths, is considered herein. The result of deviations in geometry on the order of tenths of a millimeter, this ambiguity in crack path motivates the consideration of as-manufactured component geometry in the design, assessment, and certification of structural systems. Herein, finite element models of as-manufactured specimens are generated and subsequently analyzed to resolve the crack-path ambiguity. The consequence and benefit of such a “personalized” methodology is the prediction of a crack path for each specimen based on its as-manufactured geometry, rather than a distribution of possible specimen geometries or nominal geometry. The consideration of as-manufactured characteristics is central to the Digital Twin concept. Therefore, this work is also intended to motivate its development.
机译:本文认为,一种简单的非平稳的材料试样,其沿两个不同的裂纹路径中的一个失败。几何形状的偏差导致大约十分之一毫米,裂缝路径中的这种模糊性激励了结构,评估和结构系统认证中制造的组件几何形状的考虑。这里,产生有限元模型的制造样品,并随后分析以解决裂缝路径歧义。这种“个性化”方法的后果和益处是基于其制造的几何形状来预测每个样本的裂纹路径,而不是可能的样本几何形状或标称几何形状的分布。考虑到制造特征是数字双胞胎概念的核心。因此,这项工作也旨在激励其发展。

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