Gradient grained metals whose microstructure is characterized by a spatially graded grain
size distribution show a better strength-ductility combination than their homogeneous …

High speed dislocations have long been identified as the dominant feature governing the
plastic response of crystalline materials subjected to high strain rates, controlling …

Constitutive relations for slip and deformation twinning behaviors of a number of metals,
including α-titanium, copper, α-iron, and tantalum materials, are described over a very large …

An analytic model of the evolution of dislocation density in fcc polycrystals is described. The
evolution equations approximately account for most known dislocation storage, dynamic …

The use of Nye's dislocation tensor for calculating the density of geometrically necessary
dislocations (GND) is widely adopted in the study of plastically deformed materials. The …

Accurate crystal plasticity models that faithfully capture the behavior of single crystals under
a wide range of loading conditions, such as loading direction, strain rate, and temperature …

We have developed a model for the finite deformation thermomechanical response of α-
cyclotrimethylene trinitramine (RDX). Our model accounts for nonlinear thermoelastic lattice …

In this work, we extend a dislocation-density based constitutive theory for the dynamic
thermomechanical behavior of crystals to body centered cubic (BCC) tantalum. Strain rate …

The collapse of pores plays an essential role in the shock initiation of high energy (HE)
materials. When these materials are subjected to shock loading, energy is localized in hot …

In this work, we present a model parameter calibration procedure for a physics-based crystal
plasticity model. The calibration process utilizes a powerful statistics-based Bayesian …