Results 21 to 30 of about 862,253 (63)
The nonconforming virtual element method for eigenvalue problems
, 2018 We analyse the nonconforming Virtual Element Method (VEM) for the approximation of elliptic eigenvalue problems. The nonconforming VEM allow to treat in the same formulation the two- and three-dimensional case.We present two possible formulations of the ...
Gardini, Francesca +2 more
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Measuring intergranular force in granular media [PDF]
, 2019 A new method is proposed to measure intergranular forces in granular geomaterial from time-lapsehigh-resolution X-ray computed tomographyimaging using a grain trackingapproachand discrete element ...
Cnudde, Veerle +5 more
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Discrete Element Method in der Geotechnik [PDF]
PAMM, 2007 AbstractIn der Discrete Element Method (DEM) werden Böden als Granulat betrachtet, das aus einem System einzelner Partikel besteht, dieüber Kontaktkräfte miteinander in Wechselwirkung stehen und sich gegeneinander verschieben können. In dem hier verwendeten zweidimensionalen Modell werden die Partikel als konvexe unregelmäßige Polygone modelliert ...
E. Heesen, E. Kreuzer
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Manuscripts Using Numerical Discrete Element Methods [PDF]
Rock Mechanics and Rock Engineering, 2013 The creation of numerical discrete element methods was a breakthrough in modeling discontinuous media and thus in modeling of rock masses. Recent developments in this domain, as also shown in a Special Issue of our Journal (Volume 45, Issue 5, September 2012), make it possible to simulate rock on any scale from intact rock composed of several particles
Barla, Giovanni +2 more
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Compatible finite element methods for numerical weather prediction [PDF]
, 2014 This article takes the form of a tutorial on the use of a particular class of mixed finite element methods, which can be thought of as the finite element extension of the C-grid staggered finite difference method.
Cotter, C. J., McRae, A. T. T.
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Discrete least-squares finite element methods [PDF]
Computer Methods in Applied Mechanics and Engineering, 2017 A finite element methodology for large classes of variational boundary value problems is defined which involves discretizing two linear operators: (1) the differential operator defining the spatial boundary value problem; and (2) a Riesz map on the test space. The resulting linear system is overdetermined.
Brendan Keith +3 more
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Discrete element method model of soot aggregates
Physical Review ESoot is a component of atmospheric aerosols that affects climate by scattering and absorbing the sunlight. Soot particles are fractal aggregates composed of elemental carbon. In the atmosphere, the aggregates acquire coatings by condensation and coagulation, resulting in significant compaction of the aggregates that changes the direct climate forcing ...
Egor V. Demidov +2 more
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Analysis of Sample Acquisition Dynamics Using Discrete Element Method [PDF]
The analysis presented in this paper is conducted in the framework of the Ocean Worlds Autonomy Testbed for Exploration Research and Simulation (OceanWATERS) project, currently under development at NASA Ames Research Center. OceanWATERS aims at designing
Case, Jennifer +3 more
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Hybrid Discrete-Finite Element method for biaxially-discretized structures
StructuresThe HybriDFEM method, short for Hybrid Discrete-Finite Element Method, combines both discrete and finite element approaches in a single numerical model: the method adopts a discrete representation of the structure, but the formulation is designed to integrate continuous parts that can be simulated by the Finite Element Method, allowing hybrid numerical
Igor Bouckaert +2 more
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Plate Element Formulation for a Discrete Element Method
International Journal of Advanced Science and Technology, 2016 openaire +1 more source