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A novel genetic expression programming assisted calibration strategy for discrete element models of composite joints with ductile adhesives

Wang, Xing-er, Yousefi Kanani, Armin, Pang, Kai, Yang, Jian, Ye, Jianqiao, Hou, Xiaonan (2022) A novel genetic expression programming assisted calibration strategy for discrete element models of composite joints with ductile adhesives. Thin-Walled Structures, 180 . Article Number 109985. ISSN 0263-8231. (doi:10.1016/j.tws.2022.109985) (KAR id:96747)

Abstract

Discrete element (DE) model has a great feasibility in modelling the microstructural behaviours of adhesive composite joints. However, it demands a sophisticated calibration process to determine microscale bond parameters, which involves massive efforts in both experimental and numerical investigations. This work developed a novel calibration strategy based on DE models and genetic expression programming (GEP) approach for predicting the behaviours of hybrid composite joints encompassing the material nonlinearity, large ductile deformation and multiple fracture modes. In the developed strategy, both the bulk and interlaminar-like properties of ductile adhesives were concerned to suit various joint configurations. GEP modelling was performed based on the datasets from virtual DE experiments. Symbolic regression models were subsequently developed to facilitate the parameters determination. A series lab tests were conducted to validate the numerical results. It shows that the calibrated DE model can adaptively simulate the featured behaviours of both the ductile adhesive and composite joints with different configurations well in most examined occasions. Therefore, it could be suggested to generalize the developed strategy in the development of other DE models for saving the massive efforts in the calibration process of microstructural parameters.

Item Type: Article
DOI/Identification number: 10.1016/j.tws.2022.109985
Additional information: For the purpose of open access, the author has applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission.
Uncontrolled keywords: Adhesive joint, Discrete element method, Genetic algorithm, Composite materials, Machine learning
Subjects: Q Science
T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Funders: Engineering and Physical Sciences Research Council (https://ror.org/0439y7842)
Depositing User: Armin Yousefi Kanani
Date Deposited: 16 Sep 2022 12:29 UTC
Last Modified: 27 Feb 2024 11:17 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/96747 (The current URI for this page, for reference purposes)

University of Kent Author Information

Yousefi Kanani, Armin.

Creator's ORCID: https://orcid.org/0000-0001-5569-1898
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