On the ultimate tensile strength of tantalum

EN Hahn, TC Germann, R Ravelo, JE Hammerberg… - Acta Materialia, 2017 - Elsevier
Strain rate, temperature, and microstructure play a significant role in the mechanical
response of materials. Using non-equilibrium molecular dynamics simulations, we …

Shock-induced spall in solid and liquid Cu at extreme strain rates

SN Luo, Q An, TC Germann, LB Han - Journal of Applied Physics, 2009 - pubs.aip.org
We investigate spallation in solid and liquid Cu at high strain rates induced by planar shock
loading with classical molecular dynamics. Shock simulations are performed at different …

Orientation dependent spall strength of tantalum single crystals

EN Hahn, SJ Fensin, TC Germann, GT Gray III - Acta Materialia, 2018 - Elsevier
It is generally recognized that single crystals exhibit orientation-dependent elastic and
plastic responses. However, it is less known how the dynamic tensile, or spall, strength …

Shock induced damage and fracture in SiC at elevated temperature and high strain rate

W Li, EN Hahn, X Yao, TC Germann, X Zhang - Acta Materialia, 2019 - Elsevier
Large-scale molecular dynamics simulations are used to investigate shock-induced damage
and fracture in 3C single bond SiC single crystals at an elevated initial temperature of 2000 …

Shock-induced spall in single and nanocrystalline SiC

WH Li, XH Yao, PS Branicio, XQ Zhang, NB Zhang - Acta Materialia, 2017 - Elsevier
Shock-induced spall in SiC is investigated via high strain-rate loading molecular dynamics
simulations. The dynamic response under different shock intensities is characterized along …

Orientation-dependent phase transition pathways of single-crystal nickel over large shock range

T Liu, L Chen, W Li, Z Liu, J Zhang, X Zhang… - International Journal of …, 2024 - Elsevier
The response of single crystals to increasing shock strength involves complex phase
transition processes from solid-solid to solid-liquid phases. However, it is not yet fully …

Shock wave compression behavior and dislocation density evolution in Al microstructures at the atomic scales and the mesoscales

G Agarwal, RR Valisetty, AM Dongare - International Journal of Plasticity, 2020 - Elsevier
Molecular dynamics simulations are carried out to investigate the deformation response
during shock compression of nanocrystalline Al microstructures at the atomic scales. The …

Dynamic response of metallic glass to high-strain-rate shock loading: Plasticity, spall, and atomic-level structures

B Arman, SN Luo, TC Germann, T Çağın - Physical Review B—Condensed …, 2010 - APS
We investigate dynamic response of Cu 46 Zr 54 metallic glass under adiabatic planar
shock wave loading (one-dimensional strain) with molecular dynamics simulations …

Enhanced spall strength of single crystal aluminum by temperature rise mitigation and structural phase transition under shock pulse

Y Zhu, J Hu, Q Wei, J Zhang, Y Sun, G Luo… - Mechanics of Materials, 2023 - Elsevier
Investigating the spalling behavior is beneficial for the microscale modeling of impact failure.
However, the correlation between pulse shape and spallation remains elusive due to limited …

Dynamic fracture characteristics of nanocrystalline Al containing He bubbles

DD Jiang, JL Shao, AM He, P Wang - Scripta Materialia, 2023 - Elsevier
This Letter reports the individual and combined effects of He bubbles and grain boundaries
on the spallation of aluminum at different strain rates. Molecular dynamics simulations show …