High-Strain-Rate Plastic Flow Studied via Nonequilibrium Molecular Dynamics

Key Points

• This research aims to investigate the relationship between shear stress and strain rate in metals using molecular dynamics simulations.
• Performed nonequilibrium molecular dynamics simulations of plastic flow.
• Conducted isothermal calculations to analyze shear stress behavior at different strain rates.
• Compared simulation data to experimental results to validate the findings.
• Identified a power-law dependence of shear stress on strain rate.
• Simulations align with experimental data across strain rates from 10 kHz to 1 THz.
• Proposed that a single physical mechanism governs metal flow under varied strain rates.