Comprehensive modelling of the hysteresis loops and strain-energy density for low-cycle fatigue-life predictions of the AZ31 magnesium alloy

Klemenc, Jernej (avtor), Šeruga, Domen (avtor), Nagode, Aleš (avtor), Nagode, Marko (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: magnesium AZ31, variable loading history, low-cycle fatigue, hysteresis-loop model, energy approach
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo ; NTF - Naravoslovnotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2019
• Št. strani: 24 str.
• Številčenje: Vol. 12, iss. 22, art. 3692
• PID: 20.500.12556/RUL-112752
• UDK: 620.178.3(045)
• ISSN pri članku: 1996-1944
• DOI: 10.3390/ma12223692
• COBISS.SI-ID: 16894235
• Datum objave v RUL: 11.11.2019

Gradivo je del revije

• Naslov: Materials
• Skrajšan naslov: Materials
• Založnik: MDPI
• ISSN: 1996-1944
• COBISS.SI-ID: 33588485

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 08.11.2019

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: magnezij, utrujanje, histerezna zanka, energijska metoda, naključna obremenitev