20.500.12556/DKUM-84823 Fabrication and mechanical testing of the uniaxial graded auxetic damper Auxetic structures can be used as protective sacrificial solutions for impact protection with lightweight and excellent energy-dissipation characteristics. A recently published and patented shock-absorbing system, namely, Uniaxial Graded Auxetic Damper (UGAD), proved its efficiency through comprehensive analytical and computational analyses. However, the authors highlighted the necessity for experimental testing of this new damper. Hence, this paper aimed to fabricate the UGAD using a cost-effective method and determine its load–deformation properties and energy-absorption potential experimentally and computationally. The geometry of the UGAD, fabrication technique, experimental setup, and computational model are presented. A series of dog-bone samples were tested to determine the exact properties of aluminium alloy (AW-5754, T-111). A simplified (elastic, plastic with strain hardening) material model was proposed and validated for use in future computational simulations. Results showed that deformation pattern, progressive collapse, and force–displacement relationships of the manufactured UGAD are in excellent agreement with the computational predictions, thus validating the proposed computational and material models. uniaxial graded auxetic damper energy absorber mechanical properties finite element method explicit solver enoosni razvrščeni auksetični blažilnik dušilec energije mehanske lastnosti metoda končnih elementov eksplicitni reševalec true false true MDPI AG Angleški jezik Slovenski jezik https://www.mdpi.com/journal/materials © 2022 by the authors Znanstveno delo 2023-07-28 14:25:03 2023-07-28 14:25:03 2025-03-21 07:26:48 0000-00-00 00:00:00 2022 0 0 15 str. iss. 1 Vol. 15 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2021-10-30 2021-12-25 2022-01-05 539.3:620.1 92179459 10.3390/ma15010387 1996-1944 materials-15-00387-v2.pdf materials-15-00387-v2.pdf 1 18863DCD93470CE7EBE9E483486633DC 8225720d20bf3f13c526f73dc1cc8cacec7016ca641ad2221facdded2387e957 6f16e7d4-2d42-11ee-a44f-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=169071 https://www.mdpi.com/1996-1944/15/1/387 1 c92ae15a-2d41-11ee-a44f-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=169070 Fakulteta za strojništvo 0 0 0