Reference : A Discrete Element Framework for Modeling the Mechanical Behaviour of Snow PART I: Me...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Computational Sciences
http://hdl.handle.net/10993/45219
A Discrete Element Framework for Modeling the Mechanical Behaviour of Snow PART I: Mechanical Behaviour and Numerical Model
English
Kabore, Brice Wendlassida mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
Peters, Bernhard mailto [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >]
Michael, Mark []
Francois, Nicot mailto []
7-Apr-2021
Granular Matter
Springer
23
2
42
Yes
International
1434-5021
1434-7636
Germany
[en] Snow Behaviour, Micro-mechanical Model, Brittle Fracture, Ductile Failure, Discrete Element Method (DEM), Ice, micro-structure
[en] A framework for investigating the mechanics of snow is proposed based on an advanced
micro-scale approach. Varying strain rates, densities and temperatures are taken into account. Natural hazards i.e. snow avalanches are triggered by snow deforming at low rates, while a large group of industrial applications concerning driving safety or winter sport activities require an understanding of snow behaviour under high deformation rates. On the
micro-scale, snow is considered to consist of ice grains joined by ice bonds to build a porous
structure. Deformation and failure of bonds and the inter-granular collisions of ice grains
determine the macroscopic response under mechanical load. Therefore, this study proposes
an inter-granular bond and collision model for snow based on the discrete element method
(DEM) to describe interaction on a grain-scale. It aims at predicting the mechanical behaviour of ice particles under different strain rates using a unified approach. Thus, the proposed algorithm predicts the displacement of each individual grains due to inter-granular forces and torques that derive from bond deformation and grain collision. For this purpose, the inter-granular characteristics are approximated by an elastic viscous-plastic material law which is based on the temperature-dependent properties of poly-crystalline ice Ih.
General public
http://hdl.handle.net/10993/45219
10.1007/s10035-020-01083-1
FnR ; FNR10377358 > Bernhard Peters > SnowDEM > Development of a microstructure based discrete element snow model for engineeringapplications (SnowDEM) > 15/10/2016 > 14/10/2019 > 2015

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