Spam: software for practical analysis of materials

O Stamati, E Andò, E Roubin… - Journal of Open …, 2020 - hal.univ-grenoble-alpes.fr
Spam, the Software for the Practical Analysis of Materials is a Python library that has evolved
to cover needs of data analysis from 3D x-ray tomography work and correlated random fields …

Lessons learned from matching 3D DEM and experiments at macro, meso and fabric scales for triaxial compression tests on lentils

J Pan, G Pinzón, R Wang, E Andò, G Viggiani… - Journal of the …, 2024 - Elsevier
A series of discrete element method (DEM) triaxial compression simulations on specimens
of an anisometric granular material starting from distinct initial fabric anisotropy states are …

Quantification of the strain field of sands based on X-ray micro-tomography: A comparison between a grid-based method and a mesh-based method

Z Cheng, J Wang - Powder Technology, 2019 - Elsevier
An in-situ triaxial shearing of a quartz sand sample with X-ray micro-tomography scanning is
carried out. A grid-based method is presented to experimentally quantify the strain field of …

Quantitative 3D imaging of partially saturated granular materials under uniaxial compression

M Milatz, N Hüsener, E Andò, G Viggiani, J Grabe - Acta geotechnica, 2021 - Springer
Gauging the mechanical effect of partial saturation in granular materials is experimentally
challenging due to the very low suctions resulting from large pores. To this end, a uniaxial …

Discrete particle translation gradient concept to expose strain localisation in sheared granular materials using 3D experimental kinematic measurements

AM Druckrey, KA Alshibli, RI Al-Raoush - Géotechnique, 2018 - icevirtuallibrary.com
It is well known that the constitutive behaviour of granular materials is influenced by strain
localisation into zones of intensive shearing, known as shear bands. The failure mode of …

Modeling combined fabric evolution in an anisometric granular material driven by particle-scale X-ray measurements

R Wang, G Pinzón, E Andò… - Journal of Engineering …, 2022 - ascelibrary.org
A combined fabric evolution (CFE) model is used to predict real-world fabric evolution of a
strongly anisometric granular material under triaxial loading, connecting advances in …

[HTML][HTML] Constructing continuum-like measures based on a nonlocal lattice particle model: Deformation gradient, strain and stress tensors

H Chen - International Journal of Solids and Structures, 2019 - Elsevier
Explicit expressions for continuum-like measures of deformation gradient, strain and stress
tensors were constructed using the techniques of weighted least squares and energy …

Influence functions for accurate representation of bond deformation in discrete modeling

H Chen, X Hu - Mechanics Research Communications, 2023 - Elsevier
Continuum-like nonlocal deformation gradients have been constructed based on discrete
simulation results. In this paper, the accuracy of the nonlocal deformation gradient based on …

In situ X-ray tomography and 3D X-ray diffraction measurements of cemented granular materials

C Zhai, DC Pagan, RC Hurley - JOM, 2020 - Springer
In situ x-ray tomography and three-dimensional (3D) x-ray diffraction analysis have been
combined to investigate the mechanical behavior of noncemented and lightly cemented …

Quantifying 3D time-resolved kinematics and kinetics during rapid granular compaction, Part II: Dynamics of heterogeneous pore collapse

S Ghosh, MM Thakur, RC Hurley - Journal of the Mechanics and Physics of …, 2025 - Elsevier
Pores in granular materials may occupy significant material volume. Pore-scale dynamics,
therefore, strongly influence the macroscopic response of these materials when they are …