FFT‐based homogenization with mixed uniform boundary conditions

نویسندگان

چکیده

The fast Fourier transform (FFT) based homogenization method of Moulinec and Suquet has been established as a fast, accurate, robust tool for periodic in solid mechanics. In finite element context, Pahr Zysset have introduced nonperiodic boundary conditions (PMUBC) problems. We show how to implement PMUBC efficiently an FFT-based code using discrete sine cosine transforms. Compared with the domain mirroring approach, we reduce runtime by factor 2 3, memory requirements 8. that use geometries yields vastly different results than PMUBC. Furthermore, examine influence discretization comparing staggered grid discretization.

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ژورنال

عنوان ژورنال: International Journal for Numerical Methods in Engineering

سال: 2021

ISSN: ['0029-5981', '1097-0207']

DOI: https://doi.org/10.1002/nme.6830