20.500.12556/DiRROS-21775 Extending intergranular normal-stress distributions using symmetries of linear-elastic polycrystalline materials Intergranular normal stresses (INS) are critical in the initiation and evolution of grain boundary damage in polycrystalline materials. To model the effects of such microstructural damage on a macroscopic scale, knowledge of INS is usually required statistically at each representative volume element subjected to various loading conditions. However, calculating INS distributions for different stress states can be cumbersome and time-consuming. This study proposes a new method to extend the existing INS distributions to arbitrary loading conditions using the symmetries of a polycrystalline material composed of randomly oriented linearelastic grains with arbitrary lattice symmetry. The method relies on a fact that INS distributions can be accurately reproduced from the first (typically) ten statistical moments, which depend trivially on just three stress invariants and a few material invariants due to assumed isotropy and material linearity of the polycrystalline model. While these material invariants are complex averages, they can be extracted numerically from a few existing INS distributions and tabulated for later use. Practically, only three such INS distributions at properly selected loadings are required to provide all relevant material invariants for the first 11 statistical moments, which can then be used to reconstruct the INS distribution for arbitrary loading conditions. The proposed approach is demonstrated to be accurate and feasible for an arbitrarily selected linear-elastic material under various loading conditions. linear-elastic material INS distributions polycrystalline materials polikristalni materiali distribucije INS linearnoelastična zrna true false true Springer Nature Švica Angleški jezik Slovenski jezik © The Author(s) 2024 Neznano 2025-03-27 13:29:20 2025-03-27 13:29:20 2025-10-24 03:49:48 0000-00-00 00:00:00 2024 0 0 Opis vira z dne 12. 4. 2024; Nasl. z nasl. zaslona; str. 3973–3988 Vol. 235 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-09-15 2024-03-11 2024-04-10 621.03 1619-6937 10.1007/s00707-024-03930-1 192374787 https://www.springerprofessional.de/extending-intergranular-normal-stress-distributions-using-symmet/26965150 1 1e0237ca-0b07-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31380 RAZ_El_Shawish_Samir_2024.pdf RAZ_El_Shawish_Samir_2024.pdf 1 F7FCE1E81EC0AD43A80E1B73C2A91C0F 8545e68bb393980ed79e57639320bbda45c2dba823350be262d1167e6b87feee a8220b11-0b07-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31382 Institut Jožef Stefan 0 0 0