Studying the pressure scaling of flow stress in Ta using molecular dynamics simulations.

Autor: McGonegle, D., Peake, D., Sandiford, C., Turner, J.
Předmět:
Zdroj: AIP Conference Proceedings; 2024, Vol. 3066 Issue 1, p1-6, 6p
Abstrakt: Molecular dynamics forms a key simulation technique in used in the construction of multiscale strength models. We present molecular dynamics simulations of the isochoric deformation of single crystal tantalum using our in-house developed MEAM potential. We compare the pressure dependence of the calculated flow stress with that of the calculated elastic moduli and the predictions of a number of commonly used isotropic strength models, finding a close linear scaling with shear modulus. We also demonstrate the ability to track dislocation using the DISLOC LAMMPS module and use this technique to find the dislocation velocity distribution as a function of character angle in our simulation. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index