101 citations · 194 across the 7 of their papers we have counts for
7 papers
Plasticity without phenomenology: a first step
Sabyasachi Chatterjee, Giacomo Po, Xiaohan Zhang +2
A novel, concurrent multiscale approach to meso/macroscale plasticity is demonstrated. It utilizes a carefully designed coupling of a partial differential equation (pde) based theo…
Monte Carlo Raytracing Method for Calculating Secondary Electron Emission from Micro-Architected Surfaces
Andrew Alvarado, Hsing-Yin Chang, Warren Nadvornick +2
Secondary electron emission (SEE) from inner linings of plasma chambers in electric thrusters for space propulsion can have a disruptive effect on device performance and efficiency…
A non-singular theory of dislocations in anisotropic crystals
Giacomo Po, Markus Lazar, Nikhil Chandra Admal +1
We develop a non-singular theory of three-dimensional dislocation loops in a particular version of Mindlin's anisotropic gradient elasticity with up to six length scale parameters.…
Avalanches and Plastic Flow in Crystal Plasticity: An Overview
Stefanos Papanikolaou, Yinan Cui, Nasr Ghoniem
Crystal plasticity is mediated through dislocations, which form knotted configurations in a complex energy landscape. Once they disentangle and move, they may also be impeded by pe…
Controlling Strain Bursts and Avalanches at the Nano-to-Micro Scale
Yinan Cui, Giacomo Po, Nasr Ghoniem
We demonstrate, through 3-dimensional discrete dislocation dynamics simulations, that the com- plex dynamical response of nano and micro crystals to external constraints can be tun…
A phenomenological dislocation mobility law for bcc metals
Giacomo Po, Yinan Cui, David Rivera +4
Dislocation motion in body centered cubic (bcc) metals displays a number of specific features that result in a strong temperature dependence of the flow stress, and in shear deform…