[HTML][HTML] The Contact Dynamics method: A nonsmooth story

F Dubois, V Acary, M Jean - Comptes Rendus Mécanique, 2018 - Elsevier
When velocity jumps are occurring, the dynamics is said to be nonsmooth. For instance, in
collections of contacting rigid bodies, jumps are caused by shocks and dry friction. Without …

[HTML][HTML] On the definition of the stress tensor in granular media

F Nicot, N Hadda, M Guessasma, J Fortin… - International Journal of …, 2013 - Elsevier
This paper investigates the definition of the stress tensor within a granular assembly, when
inertial effects are likely to occur. It is shown that the stress tensor can be expressed as a …

NSCD discrete element method for modelling masonry structures

B Chetouane, F Dubois, M Vinches… - … journal for numerical …, 2005 - Wiley Online Library
The aim of this paper is to present a discrete element approach for the study of stonework. In
the present work, a masonry structure is considered as a collection of rigid or deformable …

Numerical simulation of granular materials by an improved discrete element method

J Fortin, O Millet, G de Saxcé - International Journal for …, 2005 - Wiley Online Library
In this paper, we present an improved discrete element method based on the non‐smooth
contact dynamics and the bi‐potential concept. The energy dissipated during the collisions …

Coupled DEM-FEM methods for analyzing contact stress between railway ballast and subgrade considering real particle shape characteristic

J Xiao, L Xue, D Zhang, S Sun, Y Bai, J Shi - Computers and Geotechnics, 2023 - Elsevier
To investigate the stress concentration at the interface between crushed ballast and soil
subgrade, this study developed a coupling program of discrete element method (DEM) and …

DEM ball bearing model and defect diagnosis by electrical measurement

K Bourbatache, M Guessasma, E Bellenger… - … Systems and Signal …, 2013 - Elsevier
We propose in this paper a new method for the monitoring and diagnosis of bearing defects
which utilises the sensitivity and the richness of the local electrical signature of the ball …

Microscopic modeling of frictional response of smooth joint under normal cyclic loading

Q Bai, H Konietzky, W Dang - Rock Mechanics and Rock Engineering, 2022 - Springer
Normal stress changes occur commonly during fault and rock joint rupture, and play a key
role in determining frictional behavior and shear stability of these discontinuities. Previous …

[HTML][HTML] Four-point combined DE/FE algorithm for brittle fracture analysis of laminated glass

W Xu, M Zang - International Journal of Solids and Structures, 2014 - Elsevier
A four-point combined DE/FE algorithm is proposed to constrain the rotation of a discrete
element about its linked point and analyze the cracks propagation of laminated glass. In this …

DEM study of the alteration of the stress state in granular media around a bio-inspired probe

Y Chen, A Martinez, J DeJong - Canadian Geotechnical …, 2022 - cdnsciencepub.com
Soil penetration is a ubiquitous energy-intensive process in geotechnical engineering that is
typically accomplished by quasi-static pushing, impact driving, or excavating. In contrast …

Load reduction on high-filled cut-and-cover tunnel using discrete element method

S Li, IH Ho, L Ma, Y Yao, C Wang - Computers and Geotechnics, 2019 - Elsevier
High-filled cut-and-cover tunnels (HFCCTs) can help satisfy the tremendous demand for
usable land. However, this reclamation tunneling method involves massive backfill over a …