Meshless numerical modeling of brittle–viscous deformation: first results on boudinage and hydrofracturing using a coupling of discrete element method (DEM) and smoothed particle hydrodynamics (SPH)

2013 ◽  
Vol 17 (2) ◽  
pp. 373-390 ◽  
Author(s):  
Andrea Komoróczi ◽  
Steffen Abe ◽  
Janos L. Urai
Keyword(s):  
Numerical Modeling ◽  
Discrete Element Method ◽  
Smoothed Particle Hydrodynamics ◽  
Discrete Element ◽  
Viscous Deformation ◽  
Particle Hydrodynamics ◽  
First Results ◽  
Smoothed Particle ◽  
Element Method

Smoothed Particle Hydrodynamics and Discrete Element Method Coupling for Influence of Hexagonal Boron Nitride Lubricant Particle on Friction of Elastic Coarse-Grained Micronscale Iron

2021 ◽  
Vol 144 (1) ◽  
Author(s):  
Le Van Sang ◽  
Akihiko Yano ◽  
Ai I. Osaka ◽  
Natsuko Sugimura ◽  
Hitoshi Washizu
Keyword(s):  
Boron Nitride ◽  
Discrete Element Method ◽  
Smoothed Particle Hydrodynamics ◽  
Hexagonal Boron Nitride ◽  
Discrete Element ◽  
Coarse Grained ◽  
Protective Film ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Element Method

Abstract The present study uses the smoothed particle hydrodynamics (SPH) and discrete element method (DEM) coupling to investigate influence of the hexagonal boron nitride (hBN) particles on friction of the elastic coarse-grained micronscale iron. The hBN lubricant particles significantly improve the friction performance of iron in various simulation behaviors. The particle size, the air/water background containing the particles, and its temperature result in reduction of the friction coefficient. The surface mending, the protective film, and the energy dissipation are the main mechanisms related to the friction reduction. Additionally, it is worthy to note that the static friction and the kinetic friction can be clearly observed by this elastic coarse-graining.

Smoothed particle hydrodynamics versus finite element method for blast impact

2013 ◽  
Vol 61 (1) ◽  
pp. 111-121 ◽  
Author(s):  
T. Jankowiak ◽  
T. Łodygowski
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Smoothed Particle Hydrodynamics ◽  
Concrete Slab ◽  
The Finite Element Method ◽  
Particle Hydrodynamics ◽  
Mesh Density ◽  
Smoothed Particle ◽  
Element Method

Abstract The paper considers the failure study of concrete structures loaded by the pressure wave due to detonation of an explosive material. In the paper two numerical methods are used and their efficiency and accuracy are compared. There are the Smoothed Particle Hydrodynamics (SPH) and the Finite Element Method (FEM). The numerical examples take into account the dynamic behaviour of concrete slab or a structure composed of two concrete slabs subjected to the blast impact coming from one side. The influence of reinforcement in the slab (1, 2 or 3 layers) is also presented and compared with a pure concrete one. The influence of mesh density for FEM and the influence of important parameters in SPH like a smoothing length or a particle distance on the quality of the results are discussed in the paper

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