Results 51 to 60 of about 22,674 (163)

Improvement of spheropolyhedral-based discrete element method and its application in fracture process of rock mass

open access: yesYantu 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

Mathematical modeling the effect of catalyst initial shape and the crack pattern in olefin copolymerization [PDF]

open access: yesPolyolefins Journal, 2015
A two-dimensional (2D) single particle model for the copolymerization of propylene-ethylene with heterogeneous Ziegler-Natta catalyst is developed. The model accounts for the effects of the initial shape of the catalyst and carck/ pore patterns on the ...
Marzieh Nouri   +3 more
doaj   +1 more source

Nonlinearity Analysis and Parameters Optimization for an Inductive Angle Sensor

open access: yesSensors, 2014
Using the finite element method (FEM) and particle swarm optimization (PSO), a nonlinearity analysis based on parameter optimization is proposed to design an inductive angle sensor.
Lin Ye   +5 more
doaj   +1 more source

An Interface-Fitted Fictitious Domain Finite Element Method for the Simulation of Neutrally Buoyant Particles in Plane Shear Flow

open access: yesFluids, 2023
In this paper, an interface-fitted fictitious domain finite element method is developed for the simulation of fluid–rigid particle interaction problems in cases of rotated particles with small displacement, where an interface-fitted mesh is employed for ...
Yi Liang, Cheng Wang, Pengtao Sun
doaj   +1 more source

Determination of the flow field in the phenomenon of falling of sediment particles in near-stagnant water using the two-dimensional Burger equation solution with the fully implicit finite difference method [PDF]

open access: yesمهندسی منابع آب, 2020
Physical processes are dependent on various parameters that are modeled in their mathematical language with their own equation. Since some nonlinear partial differential equations are so difficult to solve, hence obtain their analytical solution except ...
Iman Rezaei, M. V, Hossein Rahideh
doaj  

Determination of Particle Paths using the Finite-Element Method [PDF]

open access: yesJournal of Glaciology, 1986
Abstract Large ice masses contain a wealth of information regarding past climates and atmospheric chemistry. To interpret properly information from ice cores obtained from glaciers, a time-scale for the ice core must be established.
D. F. E. Stolle, M. S. Killeavy
openaire   +1 more source

Effect of crack position and size of particle on SIF in SiC particles reinforced Al composite

open access: yesFracture and Structural Integrity, 2019
In this paper the effect of reinforcement crack position and loading conditions (in mode I) on the stress intensity factors of the Al/SiCp metal matrix composite was examined using a finite element method.
Aicha Metehri   +2 more
doaj   +1 more source

Direct Sampling of Monte Carlo Flight Paths in Tetrahedral Meshes with Linear Finite-Element Cross Sections [PDF]

open access: yesEPJ Web of Conferences
This paper describes how to directly sample Monte Carlo flight paths to simulate particle transport in media with continuously varying cross sections without using iterative methods.
Vaquer Pablo   +3 more
doaj   +1 more source

Possibilities of the particle finite element method in computational mechanics [PDF]

open access: yes, 2010
We present some developments in the formulation of the Particle Finite Element Method (PFEM) for analysis of complex coupled problems in fluid and solid mechanics accounting for fluid-structure interaction and coupled thermal effects. The PFEM uses an updated Lagrangian description to model the motion of nodes (particles) in both the fluid and the ...
Oñate Ibáñez de Navarra, Eugenio   +4 more
openaire   +3 more sources

Analysis of the melting, burning and flame spread of polymers with the particle finite element method

open access: yesComputer Assisted Methods in Engineering and Science, 2017
A computational procedure for analysis of the melting, burning and flame spread of polymers under fire conditions is presented. The method, termed particle finite element method (PFEM), combines concepts from particle-based techniques with those of the ...
Eugenio Oñate   +4 more
doaj   +1 more source

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