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Computational generation of statistical volume elements of biphasic asphalt concrete and its material behavior
Author(s) -
Wingender Dennis,
Schüler Thorsten,
Jänicke Ralf
Publication year - 2017
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201710212
Subject(s) - homogenization (climate) , asphalt , microstructure , representative elementary volume , materials science , asphalt concrete , finite element method , material properties , composite material , structural engineering , engineering , biodiversity , ecology , biology
Asphalt concrete is a complex mixture appearing as a biphasic material containing mineral aggregates and bitumen and as a triphasic material containing voids in addition [1]. Because of that, the overall material behavior of the asphalt concrete cannot be obtained easily from the known material data of its components and therefore, we apply computational homogenization based on statistical volume elements (SVEs). These SVEs are assumed to be statistically representative to obtain the material properties by finite element simulations and homogenization. We generate these microstructures computationally based on data from XRCT scans. The artificial microstructures show reduced geometrical complexity and therefore, reduced numerical costs compared to direct numerical simulations based on XRCT data. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)