Results 51 to 60 of about 949,726 (181)

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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Criterion for Imminent Failure During Loading—Discrete Element Method Analysis

Frontiers in Physics, 2021
It has recently been reported that the equal load sharing fiber bundle model predicts the rate of change of the elastic energy stored in the bundle reaches its maximum before catastrophic failure occurs, making it a possible predictor for imminent ...
Wojciech Dȩbski, Srutarshi Pradhan, Alex Hansen   +2 more
doaj   +1 more source

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, Hangx, Suzanne J.T., Mehranpour, Mohammed Hadi, Saadatfar, Mohammad, Spiers, Christopher J., Van Stappen, Jeroen   +5 more
core  

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, Kovari, Kalman, Einstein, Herbert H   +2 more
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Improvement of spheropolyhedral-based discrete element method and its application in fracture process of rock mass

Yantu gongcheng xuebao
In order to accurately simulate the evolution process of fractures, a three-dimensional deformable spheropolyhedral-based discrete element method is proposed by combining the finite element method with the spheropolyhedral-based discrete element method ...
ZHANG Decang , MAO Jia , DAI Miaolin , SHAO Linyu , ZHAO Lanhao
doaj   +1 more source

Modeling of Asphalt Concrete While Using Discrete Element Method

Наука и техника, 2019
The paper considers a mathematical model which is used to study a composite material similar in structure to asphalt concrete and it takes into account presence of solid particles of different sizes and a soft and plastic binder.
V. V. Alekseenko, K. Yu. Vabishchevich, E. V. Verkhoturova   +2 more
doaj   +1 more source

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, Socratis Petrides, Federico Fuentes, Leszek Demkowicz   +3 more
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ABOUT SOLUTION OF MULTIPOINT BOUNDARY PROBLEMS OF TWO-DIMENSIONAL STRUCTURAL ANALYSIS WITH THE USE OF COMBINED APPLICATION OF FINITE ELEMENT METHOD AND DISCRETE-CONTINUAL FINITE ELEMENT METHOD PART 1: FORMULATION AND BASIC PRINCIPLES OF APPROXIMATION

International Journal for Computational Civil and Structural Engineering, 2017
The distinctive paper is devoted to formulation and basic principles of approximation of multipoint boundary problem of static analysis of deep beam with the use of combined application of finite element method and discrete-continual finite element ...
Pavel A Akimov, Vladimir N. Sidorov, Oleg A. Negrozov   +2 more
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Discrete element method model of soot aggregates

Physical Review E
Soot 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, Gennady Y. Gor, Alexei F. Khalizov   +2 more
openaire   +3 more sources

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, Catanoso, Damiana, Rogg, Arno, Stucky, Thomas   +3 more
core   +1 more source