The importance of different length scales in materials science is well-recognized and subject of intense interdisciplinary research efforts. In these developments, multiscale modelling approaches take a key role as these enable the prediction of the effective material response based on detailed microstructure representations. Against this background, we focus on a scale-bridging understanding of macroscale material interfaces and on the influence of microscale interfaces on the effective properties of continua. We make use of classic energy-based homogenisation approaches, extend these to material interfaces, and demonstrate the usefulness of the proposed generalised multiscale formulations by comparison with experimental data.
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