Atomistic modeling of different loading paths in single crystal copper and aluminum (CROSBI ID 637781)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Pezer, Robert ; Trapić, Ivan
engleski
Atomistic modeling of different loading paths in single crystal copper and aluminum
Utilizing molecular dynamics integration model we have investigated relevant physical processes caused by different loading paths at the atomic level in Cu and Al monocrystal specimen. At the atomic level interactions are modeled by standard realistic Embedded Atom Method (EAM) potentials. Realistic potentials provide us with detailed information about non- equilibrium dynamics including crystal structure defects, vacancies and dislocations. In particular, we have obtained result that shows increase in total energy of the crystal during loading (especially cyclic) that provides direct quantitative evidence of the metal weakening. For the basic response, we have deformed cooper and aluminum single crystal according to simple mode I loading path and whole range of multiaxial loading-paths including cyclic repetition. We calculate equivalent stress- strain diagrams as well as several dislocation graphs providing clear signatures of anisotropic response to multiaxial loading.
Molecular dynamics ; Fatigue ; Multiaxial ; Copper ; Aluminum ; LAMMPS
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Podaci o prilogu
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2016.
objavljeno
Podaci o matičnoj publikaciji
Podaci o skupu
The 11th International Conference on Multiaxial Fatigue & Fracture (ICMFF11)
predavanje
01.06.2016-03.06.2016
Sevilla, Španjolska