Over the past decade, analysts have proposed several frameworks to explain the process of radicalization into violent extremism (RVE). These frameworks are based primarily on rational, conceptual models which are neither guided by theory nor derived from systematic research. This article reviews recent (post-9/11) conceptual models of the radicalization process and recent (post-9/11) empirical ...

We present a computational algorithm for solving the recently developed finite-deformation continuum dislocation dynamics theory of mesoscale plastic deformation single crystals (Starkey et al., 2020). This CDD is based on vector density representation dislocations governed by curl-type transport-reaction equations subjected to divergence-free constraint appropriate density. These evolution are...

Abstract To relate the thermomechanical behaviour and microstructural evolution of heat-assisted incremental sheet forming (SPIF) for Ti–6Al–4 V sheet, multi-scale models based on crystal plasticity finite element model (CPFEM), representative elementary volume (RVE), cellular automaton (CA) were established in this article. An experimental-scale CPFEM was built advance to provide macrograin le...

Abstract This contribution picks up on a novel approach for first order homogenization procedure based the Irving-Kirkwood theory and provides finite element implementation as well applications to beam plate structures. It does not have fundamental problems of dependency from representative volume (RVE) size in determining shear torsional stiffness beams plates, that is present classic Hill-Man...

A new procedure for identifying the mechanical behavior of individual phases within a bi-material (matrix-particles) is presented. The case AlSi10Mg (large globularized Si-rich particles surrounded by an α-Al phase) processed additive manufacturing and post-treated taken as typical example. Grids nano-indentation tests are performed at different locations on nanocomposite using Berkovich indent...

A dual-scale model is proposed to study the effect of microstructure parameters (grain size and grain boundary fracture energy) on thermal shock damage mechanism an example alumina. At microscale, representative volume element (RVE) models generated by Voronoi tessellation are simulated obtain mechanical for macro models. macroscale, a coupled thermomechanical based finite–discrete method (FDEM...

Ductile fracture is the macroscopic result of a micromechanical process consisting in void nucleation and growth to coalescence. While growing in size, voids also evolve in shape because of the non-uniform deformation field in the surrounding material; this shape evolution is either disregarded or approximately accounted for by constitutive laws for porous-plastic solids. To assess the effect o...