Isogeometric homogenization of unidirectional nanocomposites with energetic surfaces
Article dans une revue avec comité de lecture
Date
2024-04Journal
Acta MechanicaAbstract
The present work aims to propose an interface-enriched isogeometric analysis strategy for predicting the size-dependent effective moduli and local stress field of periodic arrays of nanosize inhomogeneity. The proposed framework allows for an exact representation of the curved boundary of inhomogeneity inside the matrix due to the representation of the geometry of repeating unit cells for microstructured materials with nonuniform rational B-splines. The energetic surface was characterized by the Gurtin-Murdoch model, and it was incorporated into the proposed framework by introducing additional surface energies linked to the bulk elements neighbouring the interface. The surface-enhanced isogeometric homogenization method was verified through comparisons with existing solutions found in the literature. It is demonstrated that the proposed framework enables the satisfaction of higher-order continuity of the displacement fields, leading to smooth and accurate predictions of the stress fields and homogenized moduli of nanocomposites, without encountering the convergence problems associated with conventional finite-element methods in the literature.
Files in this item
- Name:
- LEM3_ACTAMEC_2024_MERAGHNI.pdf
- Size:
- 3.466Mb
- Format:
- Embargoed until:
- 2024-11-01
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureCHEN, Qiang; DU, Xiaoxiao; WANG, Wei; CHATZIGEORGIOU, George; MERAGHNI, Fodil; ZHAO, Gang (Elsevier BV, 2023-11)We present an isogeometric homogenization theory (IGH) for efficiently identifying homogenized and local creep and relaxation response of linearly viscoelastic polymer composites with different microstructural parameters. ...
-
Article dans une revue avec comité de lectureDU, Xiaoxiao; CHEN, Qiang; CHATZIGEORGIOU, George; MERAGHNI, Fodil; ZHAO, Gang; CHEN, Xuefeng (Elsevier BV, 2024-08)An isogeometric homogenization (IGH) technique is constructed for the homogenization and localization of unidirectional composites with radially or circumferentially orthotropic carbon/graphite fibers. The proposed theory ...
-
Article dans une revue avec comité de lectureIn this contribution, a probabilistic micromechanics damage framework is presented to predict the macroscopic stress-strain response and progressive damage in unidirectional glass-reinforced thermoplastic polymer composites. ...
-
Article dans une revue avec comité de lectureA new hybrid homogenization approach is proposed for simulating the homogenized and local response of unidirectional fuzzy fiber nanocomposites undergoing inelastic deformations. Fuzzy fiber composites are hierarchical ...
-
Article dans une revue avec comité de lectureIn this paper, an original probabilistic micromechanics damage framework involving multi-deformation mechanisms, based on the modified Mori-Tanaka and Transformation Field Analysis (MT-TFA) techniques, is developed to ...