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Efficient meshing technique for textile composites unit cells of arbitrary complexity

Matveev, Mikhail Y.; Brown, Louise P.; Long, Andrew C.

Efficient meshing technique for textile composites unit cells of arbitrary complexity Thumbnail


Authors

MIKHAIL MATVEEV MIKHAIL.MATVEEV@NOTTINGHAM.AC.UK
Assistant Professor in Engineering Mechanics - Statics & Dynamics

Andrew C. Long



Abstract

Meso-scale unit cell models are often used to simulate mechanical behaviour of textile composites. Apart from reliable ways to create meso-scale geometries, such simulations require reliable meshing algorithms. While the former is made possible via dedicated textile pre-processors or high-fidelity weaving simulations, the meshing remains quite problematic for complex textiles and geometries. Even though, with a lot of user input, it is possible to create very complex meshes using meshing pre-processors, this approach remains infeasible for cases when a large number of models need to be analysed.

This paper presents a meshing approach based on the combination of local octree-refinement with surface smoothing. This allows nearly conformal meshes to be generated for geometries of any complexity which achieve accuracy comparable to that of conformal meshes. A range of unit cells was analysed using the new approach and it was shown that the error in local stresses is within 10% of the reference solution and the average error is below 7%. It was found that the computational cost of the analysis using the new meshing technique is not considerably higher than for an analysis which uses a conventional conformal mesh yet the new approach allows analysis of any geometry.

Journal Article Type Article
Acceptance Date Jul 27, 2020
Online Publication Date Jul 31, 2020
Publication Date Dec 15, 2020
Deposit Date Aug 4, 2020
Publicly Available Date Aug 1, 2021
Journal Composite Structures
Print ISSN 0263-8223
Electronic ISSN 1879-1085
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 254
Article Number 112757
DOI https://doi.org/10.1016/j.compstruct.2020.112757
Keywords Ceramics and Composites
Public URL https://nottingham-repository.worktribe.com/output/4811814
Publisher URL https://www.sciencedirect.com/science/article/pii/S0263822320326830

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