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 ![]() | |
Peters, Bernhard ![]() | |
Michael, Mark [] | |
Francois, Nicot ![]() | |
In press | |
Granular Matter | |
Springer | |
Yes (verified by ORBilu) | |
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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