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- W4386839868 abstract "When modelling discontinuities (interfaces) using the finite element method, the standard approach is to use a conforming finite-element mesh in which the mesh matches the interfaces. However, this approach can prove cumbersome if the geometry is complex, in particular in 3D. In this work, we develop an efficient technique for a non-conforming finite-element treatment of weak discontinuities by using laminated microstructures. The approach is inspired by the so-called composite voxel technique that has been developed for FFT-based spectral solvers in computational homogenization. The idea behind the method is rather simple. Each finite element that is cut by an interface is treated as a simple laminate with the volume fraction of the phases and the lamination orientation determined in terms of the actual geometrical arrangement of the interface within the element. The approach is illustrated by several computational examples relevant to the micromechanics of heterogeneous materials. Elastic and elastic-plastic materials at small and finite strain are considered in the examples. The performance of the proposed method is compared to two alternative, simple methods showing that the new approach is in most cases superior to them while maintaining the simplicity." @default.
- W4386839868 created "2023-09-19" @default.
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- W4386839868 date "2023-09-11" @default.
- W4386839868 modified "2023-09-27" @default.
- W4386839868 title "Lamination-based efficient treatment of weak discontinuities for non-conforming finite element meshes" @default.
- W4386839868 doi "https://doi.org/10.48550/arxiv.2309.08577" @default.
- W4386839868 hasPublicationYear "2023" @default.
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