Výsledky vyhledávání - "Falsafi, Ali"

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Non-convex, ringing-free, FFT-accelerated solver using an incremental approximate energy functional

Autor: Falsafi, Ali, Leute, Richard J., Ladecký, Martin, Junge, Till

Fourier-accelerated micromechanical homogenization has been developed and applied to a variety of problems, despite being prone to ringing artifacts. In addition, the majority of Fourier-accelerated solvers applied to FFT-accelerated schemes only app

Externí odkaz: http://arxiv.org/abs/2207.10657

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Optimal FFT-accelerated Finite Element Solver for Homogenization

Autor: Ladecký, Martin, Leute, Richard J., Falsafi, Ali, Pultarová, Ivana, Pastewka, Lars, Junge, Till, Zeman, Jan

We propose a matrix-free finite element (FE) homogenization scheme that is considerably more efficient than generic FE implementations. The efficiency of our scheme follows from a preconditioned well-scaled reformulation allowing for the use of the c

Externí odkaz: http://arxiv.org/abs/2203.02962

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Elimination of ringing artifacts by finite-element projection in FFT-based homogenization

Autor: Leute, Richard J., Ladecký, Martin, Falsafi, Ali, Jödicke, Indre, Pultarová, Ivana, Zeman, Jan, Junge, Till, Pastewka, Lars

Publikováno v: J. Comput. Phys. 453, 110931 (2022)

Micromechanical homogenization is often carried out with Fourier-accelerated methods that are prone to ringing artifacts. We here generalize the compatibility projection introduced by Vond\v{r}ejc, Zeman & Marek [Comput. Math. Appl. 68, 156 (2014)] b

Externí odkaz: http://arxiv.org/abs/2105.03297

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