Strain rate dependence of spall strength for solid and molten lead and tin
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Fracture"
DOI: 10.1007/s10704-020-00440-8
Abstract: Dynamic tensile (spall) fracture of pure Pb and Sn in solid and molten states is investigated by MD simulations. The influence of unwettable inclusions on the spall strength is revealed. Mechanical model of fracture is… read more here.
Keywords: strength; strain rate; spall strength; mathrm ... See more keywords
Orientation dependent spall strength of tantalum single crystals
Sign Up to like & getrecommendations! Published in 2018 at "Acta Materialia"
DOI: 10.1016/j.actamat.2018.07.073
Abstract: Abstract 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 depends on crystalline orientation, especially for BCC materials. It… read more here.
Keywords: strength; tantalum single; orientation dependent; single crystals ... See more keywords
A physics-based model and simple scaling law to predict the pressure dependence of single crystal spall strength
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2020.103875
Abstract: Abstract A homogenized framework for ductile damage accounting for the effect of void growth on the thermomechanical response of single crystals under dynamic loading (CPD-FE) is developed. The current framework extends our prior work (Nguyen… read more here.
Keywords: single crystal; spall strength; pressure; physics ... See more keywords
Solid solution softening in dislocation-starved Mg–Al alloys
Sign Up to like & getrecommendations! Published in 2020 at "Mechanics of Materials"
DOI: 10.1016/j.mechmat.2020.103588
Abstract: Abstract Here, we report molecular dynamics (MD) calculations of spall strength in pure magnesium and magnesium alloys with 1-8 at.% aluminum in solid solution. The Mg–Al solid solution alloys are found to have a weaker spall… read more here.
Keywords: dislocation starved; solid solution; spall strength; solution ... See more keywords
Spall strength of liquid copper and accuracy of the acoustic method
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4978251
Abstract: We investigate spallation in liquid copper at high strain rates induced by planar shock loading with classical molecular dynamics simulations. Spallation simulations are performed at different initial temperatures, shock durations, and shock strengths. Loading may… read more here.
Keywords: acoustic method; spall strength; method; accuracy acoustic ... See more keywords
Spall response of single-crystal copper
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5012267
Abstract: We performed a series of systematic spall experiments on single-crystal copper in an effort to determine and isolate the effects of crystal orientation, peak stress, and unloading strain rate on the tensile spall strength. Strain… read more here.
Keywords: crystal copper; single crystal; copper; stress ... See more keywords
Understanding and predicting damage and failure at grain boundaries in BCC Ta
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Physics"
DOI: 10.1063/1.5111837
Abstract: Understanding the effect of grain boundaries (GBs) on the deformation and spall behavior is critical to designing materials with tailored failure responses under dynamic loading. This understanding is hampered by the lack of in situ… read more here.
Keywords: deformation; failure; spall strength; grain boundaries ... See more keywords