Shear strength of metals under uniaxial deformation and pure shear

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Latypov, F.T.^1 ; Mayer, A.E.^1

Chelyabinsk State University, Bratiev Kashirinykh Street 129, Chelyabinsk

454001, Russia^1

关键词: Dynamic shear strength;    FCC metals;    Molecular dynamics simulations;    Monocrystalline metals;    Strong dependences;    Uni-axial compression;    Uniaxial deformation;    Uniaxial tensions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012041/pdf
DOI  :  10.1088/1742-6596/653/1/012041

来源: IOP

【 摘 要 】

In this paper, we investigate the dynamic shear strength of perfect monocrystalline metals using the molecular dynamics simulation. Three types of deformation (single shear, uniaxial compression and tension) are investigated for five metals of different crystallographic systems (fcc, bcc and hcp). A strong dependence of the calculated shear strength on the deformation type is observed. In the case of bcc (iron) and hcp (titanium) metals, the maximal shear strength is achieved at the uniaxial compression, while the minimal shear strength is observed at the uniaxial tension. In the case of fcc metals (aluminum, copper, nickel) the largest strength is achieved at the pure shear, the lowest strength is obtained at the uniaxial compression.