145 citations · 177 across the 6 of their papers we have counts for
6 papers
Micropolar elastoplasticity using a fast Fourier transform-based solver
Noah M. Francis, Ricardo A. Lebensohn, Fatemeh Pourahmadian +1
This work presents a micromechanical spectral formulation for obtaining the full-field and homogenized response of elastoplastic micropolar composites. A closed-form radial-return…
An FFT-based approach for Bloch wave analysis: application to polycrystals
J. Segurado, R. A. Lebensohn
A method based on the Fast Fourier Transform is proposed to obtain the dispersion relation of acoustic waves in heterogeneous periodic media with arbitrary microstructures. The mic…
Imposing equilibrium on measured 3-D stress fields using Hodge decomposition and FFT-based optimization
Hao Zhou, Ricardo A. Lebensohn, Péter Reischig +2
We present a methodology to impose micromechanical constraints, i.e. stress equilibrium at grain and sub-grain scale, to an arbitrary (non-equilibrated) voxelized stress field obta…
Dislocation interactions in olivine control postseismic creep of the upper mantle
David Wallis, Lars N. Hansen, Angus J. Wilkinson +1
Changes in stress applied to mantle rocks, such as those imposed by earthquakes, induce a period of evolution in viscosity and microstructure. This transient creep is often modelle…
Computational Homogenization of Polycrystals
J. Segurado, R. A. Lebensohn, J. LLorca
This paper reviews the current state-of-the-art in the simulation of the mechanical behavior of polycrystalline materials by means of computational homogenization. The key ingredie…
Combined effects of anisotropy and tension-compression asymmetry on the torsional response of AZ31 Mg
Nitin Chandola, Ricardo A. Lebensohn, Benoit Revil-Baudard +3
In this paper it is demonstrated that only by accounting for the combined effects of anisotropy and tension-compression asymmetry both at single crystal and polycrystal levels, it…