A direct approach to modelling the complex response of magnesium AZ31 alloy sheets to variable strain amplitude loading using Prandtl-Ishlinskii operators
A new approach to modelling the complex behaviour of magnesium AZ31 alloy subjected to arbitrary uniaxial cyclic loading is introduced. Based on the Prandtl-Ishlinskii rheological model, one side play operators are applied so as to simulate the ascending and descending parts of asymmetric hysteresis loops separately. From the known material response to constant amplitude uniaxial loading, the Prandtl-Ishlinskii rheological model gives a fast and accurate simulation of the magnesium AZ31 alloy sheets response to arbitrary uniaxial loading under isothermal conditions. The approach represents a valuable starting point for estimating fatigue life using the energy approach for magnesium alloys.
2019
2019-06-27 13:51:17
1033
uniaxial cyclic loading, variable amplitude loading, magnesium alloys, AZ31 Mg, material model, rheological model, one side play operators, Prandtl-Ishlinskii operators
enoosno obremenjevanje, obremenjevanje s spremenljivo amplitudo, magnezijeve zlitine, materialni modeli, reološki modeli, enostranski operatorji, Prandtl-Ishlinskii operatorji
dk_c
Urša
Šolinc
70
Jernej
Klemenc
70
Marko
Nagode
70
Domen
Šeruga
70
UDK
4
531:621.86.01:669.721.5(045)
ISSN pri članku
9
0142-1123
DOI
15
10.1016/j.ijfatigue.2019.06.009
COBISS_ID
3
16674075
OceCobissID
13
25643520
RAZ_Solinc_Ursa_i2019.pdf
2989184
Predstavitvena datoteka
2019-06-27 13:54:28
0
Izvorni URL
2019-06-27 13:51:22