Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1002/nme.7249
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Title (Primary) Reconstruct lower-dimensional crack paths from phase-field point cloud
Author Xu, Y.; You, T. ORCID logo ; Zhu, Q.
Journal International Journal for Numerical Methods in Engineering
Year 2023
Department ENVINF
Volume 124
Issue 15
Page From 3329
Page To 3351
Language englisch
Topic T5 Future Landscapes
Keywords crack reconstruction; discrete fracture network; fault friction; normal direction; phase-field method, point cloud
Abstract Because of the smeared representation of phase-field fracture, reconstructing lower-dimensional crack paths is challenging, which may impede the further applications of the phase-field method in the modeling of fault friction and fluid flow in fracture. In the present work, we propose to capture the crack curves or surfaces from two-dimensional or three-dimensional phase-field point cloud using an optimized ridge regression algorithm, and k-nearest neighbor and principal component analysis are used to estimate the normal direction of each segment on the identified discrete crack path. The sensitivity and computational efficiency of the proposed method are investigated thoroughly. Subsequently, this method is extended to reconstruct the complex discrete fracture networks. Finally, several benchmarks for fracture, fault friction and fluid flow problems are presented to demonstrate the strength of the proposed approach.
Persistent UFZ Identifier
Xu, Y., You, T., Zhu, Q. (2023):
Reconstruct lower-dimensional crack paths from phase-field point cloud
Int. J. Numer. Methods Eng. 124 (15), 3329 - 3351