Prediction and control of fracture paths in disordered architected materials using graph neural networks
Open access
Date
2023-06-02Type
- Journal Article
Abstract
Architected materials typically rely on regular periodic patterns to achieve improved mechanical properties such as stiffness or fracture toughness. Here we introduce a class of irregular cellular materials with engineered topological and geometrical disorder, which represents a shift from conventional designs. We first develop a graph learning model for predicting the fracture path in these architected materials. The model employs a graph convolution for spatial message passing and a gated recurrent unit architecture for temporal dependence. Once trained on data gleaned from experimentally validated elastoplastic beam finite element analyses, the learned model produces accurate predictions overcoming the need for expensive finite element calculations. We finally leverage the trained model in combination with a downstream optimization scheme to generate optimal architectures that maximize the crack path length and, hence, the associated fracture energy. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000615102Publication status
publishedExternal links
Journal / series
Communications EngineeringVolume
Pages / Article No.
Publisher
NatureOrganisational unit
09600 - Kochmann, Dennis / Kochmann, Dennis
Funding
101024077 - Data-Driven Design of Disordered Materials (EC)
Related publications and datasets
Is supplemented by: https://doi.org/10.3929/ethz-b-000608722
Notes
Marie Skłodowska-Curie Grant No 101024077, Project: Data-Driven Design of Disordered Materials (D4M)More
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