20.500.12556/RUL-112752 Comprehensive modelling of the hysteresis loops and strain-energy density for low-cycle fatigue-life predictions of the AZ31 magnesium alloy Magnesium is one of the lightest metals for structural components. It has been used for producing various lightweight cast components, but the application of magnesium sheet plates is less widespread. There are two reasons for this: (i) its poor formability at ambient temperatures; and (ii) insufficient data on its durability, especially for dynamic loading. In this article, an innovative approach to predicting the fatigue life of the AZ31 magnesium alloy is presented. It is based on an energy approach that links the strain-energy density with the fatigue life. The core of the presented methodology is a comprehensive new model for tensile and compressive loading paths, which makes it possible to calculate the strain-energy density of closed hysteresis loops. The model is universal for arbitrary strain amplitudes. The material parameters are determined from several low-cycle fatigue tests. The presented approach was validated with examples of variable strain histories. magnesium AZ31 variable loading history low-cycle fatigue hysteresis-loop model energy approach magnezij utrujanje histerezna zanka energijska metoda naključna obremenitev true false true Angleški jezik Slovenski jezik Članek v reviji 2019-11-11 14:16:26 2019-11-11 14:16:30 2025-03-18 13:42:41 0000-00-00 00:00:00 2019 0 0 24 str. iss. 22, art. 3692 Vol. 12 Nov. 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.178.3(045) 1996-1944 10.3390/ma12223692 16894235 RAZ_Klemenc_Jernej_2019.pdf RAZ_Klemenc_Jernej_2019.pdf 1 457418A86D017DE2E8A5DBF55C15F728 ee6673ffc94ad5250913aa244371702e8127ea44f25da6f88207a7b0bc30438a f03c49bc-45e7-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=151016 https://www.mdpi.com/1996-1944/12/22/3692 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=124702 Fakulteta za strojništvo Naravoslovnotehniška fakulteta 0 0 0