Results 21 to 30 of about 954,008 (282)
A posteriori error control for fully discrete Crank–Nicolson schemes [PDF]
, 2012 We derive residual-based a posteriori error estimates of optimal order for fully discrete approximations for linear parabolic problems. The time discretization uses the Crank--Nicolson method, and the space discretization uses finite element spaces that ...
Bänsch, E +2 more
core +2 more sources
Identification of numerical model parameters of tunnel lining in non-cohesive soil [PDF]
Biuletyn Wojskowej Akademii Technicznej, 2018 The paper discusses identification of numeric model parameters of tunnel lining in a soil medium according to the discrete element method. An author’s program based on the discrete element method was used. Laboratory tests were conducted to determine the
Paweł Szklennik
doaj +1 more source
International Journal for Computational Civil and Structural Engineering, 2020 Numerical solution of the problem of isotropic plate analysis with the use of B-spline discrete-continual finite element method (specific version of wavelet-based discrete-continual finite element method) is under consideration in the distinctive paper ...
Pavel Akimov, Marina Mozgaleva
doaj +1 more source
The soft discrete element method
Granular Matter, 2021 In order to accelerate simulations of assemblies of highly deformable grains, a novel numerical approach, called Soft Discrete Element Method (SDEM) is presented. It consists in extending the classical DEM by introducing the deformability of the grains in a simplified way.
openaire +1 more source
Boundary element method based on preliminary discretization [PDF]
Mathematical Models and Computer Simulations, 2014 The final publication is available at Springer via http://dx.doi.org/10.1134/S2070048214020082 A new numerical method for solving wave diffraction problems is given. The method is based on the concept of boundary elements; i.e., the unknown values are the field values on the surface of the scatterer. An analog of a boundary element method rather than a
Poblet-Puig, Jordi +2 more
openaire +4 more sources
Investigation of a boundary simulation of continuity using the discrete solid element method
Advances in Mechanical Engineering, 2019 The discrete solid element method is an efficient numerical method that simulates the large deformation, strong material nonlinearity, fracture, and dynamic problems of continuity.
Baochen Zhu, Ruoqiang Feng
doaj +1 more source
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 ...
doaj +1 more source
Advances in Civil Engineering, 2020 A brief literature review of numerical studies on excavation damage zone (EDZ) is conducted to compare the main numerical methods on EDZ studies. A hybrid finite-discrete element method is then proposed to model the EDZ induced by blasts.
Huaming An, Hongyuan Liu, Haoyu Han
doaj +1 more source
, 2013 In this paper we present PDE and finite element analyses for a system of partial differential equations (PDEs) consisting of the Darcy equation and the Cahn-Hilliard equation, which arises as a diffuse interface model for the two phase Hele-Shaw flow. We
G., Steven Wise, Xiaobing Feng
core +1 more source
Discrete element method approach to modelling VPP dampers
MATEC Web of Conferences, 2018 In this paper, we present a novel approach to modeling and analysis of Vacuum Packed Particle dampers (VPP dampers) with the use of Discrete Element Method (DEM). VPP dampers are composed of loose granular medium encapsulated in a hermetic envelope, with
Chodkiewicz Pawel +2 more
doaj +1 more source