65 citations · 111 across the 5 of their papers we have counts for
6 papers
A discrete dislocation analysis of size-dependent plasticity in torsion
A. Cruzado, M. P. Ariza, A. Needleman +2
A method for solving three dimensional discrete dislocation plasticity boundary-value problems using a monopole representation of the dislocations is presented. At each time step,…
Discrete defect plasticity and implications for dissipation
Alan Needleman
The focus is on discrete defects that can be modeled by continuum mechanics, but where the discreteness of the carriers of plastic deformation plays a significant role. The formula…
Effect of size on necking of dynamically loaded notched bars
Alan Needleman
The influence of material inertia on neck development in a notched round bar is analyzed numerically. Dynamic axisymmetric calculations are carried out for isotropically hardening…
Correlating toughness and roughness in ductile fracture
Laurent Ponson, Ankit Srivastava, Shmulik Osovski +3
Three dimensional calculations of ductile crack growth under mode I plane strain, small scale yielding conditions are carried out using an elastic-viscoplastic constitutive relatio…
Frictional sliding modes along an interface between identical elastic plates subject to shear impact loading
D. Coker, G. Lykotrafitis, A. Needleman +1
Frictional sliding along an interface between two identical isotropic elastic plates under impact shear loading is investigated experimentally and numerically. The plates are held…
A critical evaluation of dynamic fracture simulations using cohesive surfaces
Michael L. Falk, Alan Needleman, James R. Rice
Finite element calculations of dynamic fracture based on embedding cohesive surfaces in a continuum indicate that the predictions are sensitive to the cohesive law used. Simulation…