Lynn Seaman

TL;DR: In this article, the authors present a methodology that relates the kinetics of material failure on the microstructural level to continuum mechanics, by introducing micro-structural descriptions of damage into the continuum constitutive relations as internal state variables.

TL;DR: In this article, a model of dynamic ductile and brittle fracture was developed for wave propagation in one-and two-dimensional geometries, and the model features were taken mainly from detailed observations of samples partially fractured during impacts, but the functional forms are consistent with theoretical results where applicable.

TL;DR: In this paper, a micromechanical model of deformation with application to penetration of thick ceramic targets was described. But the model was used in parametric finite element code calculations of the penetration of an eroding, long tungsten rod into a target package consisting of a thick aluminum nitride plate confined in steel.

TL;DR: In this article, an approach is described for predicting fragment size distributions for rock under dynamic loading conditions, which is applied to Arkansas novaculite under one-dimensional-strain impact loads.

TL;DR: In this paper, the authors define material failure as a process that advances by rate processes that have threshold conditions and characteristic growth kinetics, and all material failure is dynamic, almost by definition.