20.500.12556/DKUM-99282 Mechanism-based comparison of Ti-6Al-4V lattice topologies with and without face sheets under quasi-static and dynamic loading A constitutive model calibrated for an electron-beam-melted Ti-6Al-4V Body-Centred Cubic (BCC) lattice was modelled to evaluate nine strut-based lattice topologies different strain rates. For each topology, configurations with face sheets (WFS) and without face sheets (WOFS) were compared using the first-peak stress, ultimate compressive stress (UCS), plateau stress, and specific energy absorption (SEA) performance indicators. The model was initially validated against experiments for a WFS BCC lattice and then used to predict performance across the remaining designs. Face sheet efficiency factors were introduced to quantify the mass-normalised benefit or penalty of face sheets for each topology, including peak stress, UCS, plateau stress, and SEA. The highest SEA under quasi-static loading was obtained for Face-Body-Centred-Cubic (FBCC)–WOFS, while under dynamic impact, the highest SEA was achieved by Face-Body-Centred-Cubic with stiffener in Z direction (FBCCz)–WOFS, closely followed by Octet–WOFS. Face-Body-Centred-Cubic stiffeners in x, y and z directions (FBCCxyz) exhibited the highest strength response. Collapse was classified into four dominant modes. Shear collapse encouraged load redistribution, mixed (shear–global) collapse rendered homogenous deformation, global failure showed the highest crushing force efficiency, and layer-wise collapse resulted in higher peak stresses. strut-based lattices numerical modelling lattice topology comparison drop-weight impact specific energy absorption facesheet efficiency matrices rešetke na osnovi opornikov numerično modeliranje primerjava topologije mrež učinek padajoče teže specifična absorpcija energije matrike učinkovitosti obrazne strani true false true Elsevier Angleški jezik Slovenski jezik Članek v reviji 2026-08-11 14:23:38 2026-08-11 14:23:39 2026-08-13 12:23:19 2026-08-14 03:09:43 2026 0 0 20 str. Letn. 4, št. članka 100145 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2026-03-26 2026-06-23 2026-07-13 531/533:620.1 284701187 10.1016/j.smmf.2026.100145 2772-8102 URN:SI:UM:DK:9ZMJ6WE2 Mechanism-based_compariso-Arslan_Bin_Riaz-2026.pdf Mechanism-based_compariso-Arslan_Bin_Riaz-2026.pdf 1 CA37F528068C1D724C16D6691AEADAC8 8ddb962dbf7d4dd1f1fdc12942b9a2fd8c5a1a8d56b9e6380c4bc36574a6cf05 d387e3eb-957f-11f1-b509-00155d0001be https://dk.um.si/Dokument.php?lang=slv&id=209244 https://www.sciencedirect.com/science/article/pii/S277281022600022X?via%3Dihub 1 7be003c5-957f-11f1-b509-00155d0001be https://dk.um.si/Dokument.php?lang=slv&id=209243 Fakulteta za strojništvo 0 0 0