Prediction of static and low-cycle durability of porous cellular structures with positive and negative Poisson's ratios

Tomažinčič, Dejan (avtor), Vesenjak, Matej (avtor), Klemenc, Jernej (avtor)

The static and low-cycle durability of three planar cellular structures, hexagonal, auxetic and auxetic-chiral, have been compared. The three structures have the same critical cross-section and are made from an aluminium alloy Al7075-T651. The reference region of each structure is represented by a matrix of nine elementary shaped cells (3 rows by 3 columns). For each structure static and low-cycle fatigue experiments at different loading amplitudes were made. Numerical simulations were then performed for the same boundary conditions to predict the static and low-cycle fatigue durability. For this purpose a continuum damage mechanics approach with element removal was used in explicit dynamic simulations. The results of static simulations were also checked using the eXtended Finite Element Method (XFEM). All the numerical simulations were carried out using Abaqus. Good agreement was observed between the simulated and measured results for each of the three cellular structures.

• Jezik: Angleški jezik
• Ključne besede: low-cycle fatigue, element removal, XFEM, aluminium alloy, auxetic, honeycomb, strain-energy density
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Leto izida: 2020
• Št. strani: Str. 1-13
• Številčenje: Vol. 106 (102479)
• PID: 20.500.12556/RUL-113842
• UDK: 539.2:539.4(045)
• ISSN pri članku: 0167-8442
• DOI: 10.1016/j.tafmec.2020.102479
• COBISS.SI-ID: 22988310
• Datum objave v RUL: 06.02.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: malo-ciklično utrujanje, odstranitev elementov, aluminijeve zlitine, oksetični materiali, satovje, gostota energije specifične deformacije

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: J2-8186
• Naslov: Razvoj večnamenskih avksetičnih celičnih struktur