Results 31 to 40 of about 949,726 (181)
Dynamic mesh refinement for discrete models of jet electro-hydrodynamics
, 2016 Nowadays, several models of unidimensional fluid jets exploit discrete element methods. In some cases, as for models aiming at describing the electrospinning nanofabrication process of polymer fibers, discrete element methods suffer a non constant ...
Akima +32 more
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Track ballast modelling by discrete element method
Građevinar, 2019 An increase in axle load and travel speed causes faster degradation of track structure and, hence, of the ballast prism. Crushing of stone grains in ballast due to excessive contact forces among these grains causes degradation in the form of filling of ...
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Slope Failure of Noncohesive Media Modelled with the Combined Finite–Discrete Element Method
Applied Sciences, 2019 Slope failure behaviour of noncohesive media with the consideration of gravity and ground excitations is examined using the two-dimensional combined finite⁻discrete element method (FDEM).
Xudong Chen, Hongfan Wang
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ModellingShort-range forces enable peridynamics to simulate impact, yet it demands a computationally expensive contact search and includes no intrinsic damping.
Kinan Bezem +2 more
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A block–particle–bar coupled algorithm to simulate tunnel excavation and support
工程科学学报, 2023 During tunnel excavation, the stress of the surrounding rock is redistributed, leading to a local stress concentration around the tunnel. In addition, blasting excavation and other factors lead to a strength reduction of rock mass around the tunnel and ...
Xiao-guang LI, Chang-hong LI, Chun FENG
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Study on Sliding Friction Coefficient in Block Element Method Based on Experimental Method
Applied SciencesThe mechanics and motion behavior of granular materials affect the production and life of human beings. In order to study the influence of the sliding friction coefficients corresponding to different contact types in the block discrete element method on ...
Pengcheng Liu, Jun Liu, Yue Wang
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A study of fragmentation processes using a discrete element method
, 1995 We present a model of solids made from polygonal cells connected via beams. We calculate the macroscopic elastic moduli from the beam and cell parameters. This modellisation is particularly suited for the simulation of fragmentation processes.
Arbiter +19 more
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Review of calibration strategies for discrete element model in quasi-static elastic deformation
Scientific Reports, 2023 This study first reviewed theories of the mechanical response of structures under loading, and the discrete element method provides a route for studying mechanical response including elastic deformation and structure failure.
Xianyang Liu +3 more
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Water retention in discrete element method [PDF]
AIP Conference Proceedings, 2013 We describe water movement and retention using the discrete element method in view of future modelling of partially saturated granular materials. By defining the water potential in terms of capillary bridges at low saturation, and in terms of pressure of entrapped air at high saturation, we investigate the hysteresis of water retention in granular ...
Yixiang Gan, Federico Maggi, Itai Einav
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A review of discrete modeling techniques for fracturing processes in discontinuous rock masses
Journal of Rock Mechanics and Geotechnical Engineering, 2014 The goal of this review paper is to provide a summary of selected discrete element and hybrid finite–discrete element modeling techniques that have emerged in the field of rock mechanics as simulation tools for fracturing processes in rocks and rock ...
A. Lisjak, G. Grasselli
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