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cascading analysis using discrete element method in

  • Cascading Analysis Using Discrete Element Method in

    Discrete Element Methods have been used extensively in processes involving flow behavior where modeling the individual particles is of particular interest. A rotary cooler is an application of one such process. Although the current analysis can be used to any type of rotary cooler or rotary dryer, this work is focused on the analysis of particles falling from lifters in a planetary rotary ...

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  • Analysis of power draw in ball mills by the discrete ...

    1999-4-1 · Therefore, the discrete element method is a suitable choice for modeling the internal dynamics of ball mill, where balls and the mill shell are treated as geometrically inviolate elements . The discrete element analysis starts with a mathematical representation of the entities. Ideally the system should be simulated in three dimensions.

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  • Analysis on Grinding media Motion in Ball Mill by Discrete ...

    2009-10-7 · Analysis on Grinding media Motion in Ball Mill by Discrete Element Method YI SUN, MINGFENG DONG, YALANG MAO, DIFENG FAN The Ministry of Education Key Laboratory of Special Purpose Equipment and Advanced Processing Technology Zhejiang University of Technology , Hangzhou, 310032, CHINA [email protected]

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  • Based on Discrete Element Method - MDPI

    2020-2-18 · Analysis and regulation of the optimal speed under di erent working conditions can ... size and number was investigated using discrete element method (DEM). An improved exponential ... cascading type, throwing type, and centrifugal type, as shown in Figure2. The cascading type grinding ball has little impact on the material, and the

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  • 3D FEM simulation of SAW resonators using hierarchical ...

    3D FEM simulation of SAW resonators using hierarchical cascading technique and general purpose graphic processing unit Xinyi Li1,2*, Jingfu Bao1, Luyan Qiu2, Naoto Matsuoka2,3, Tatsuya Omori2, and Ken-Ya Hashimoto2 1School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, People’s Republic of China

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  • An Augmented Lagrangian Relaxation for Analytical Target ...

    2005-11-2 · An Augmented Lagrangian Relaxation for Analytical Target Cascading using the Alternating Directions Method of Multipliers S. Tosserams1, ... Analytical Target Cascading (ATC) is a method for design optimization of hierarchically decomposed ... Each element may use one or more analysis models to determine the responses to the propa-gated targets ...

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  • Study of loss mechanisms in temperature compensated ...

    This paper discusses loss mechanisms of temperature compensated surface acoustic wave (TC-SAW) devices using the SiO2 overcoated 128°YX-LiNbO3 (128-LN) substrate. Analysis is based on the finite element method (FEM) combined with the hierarchical cascading technique and the general purpose graphics processing unit.

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  • Analysis of solid particle erosion in direct impact tests ...

    2021-5-1 · Analysis of solid particle erosion in direct impact tests using the discrete element method. ... First, the interaction among particles is studied using the discrete element method to consider the influence of high-concentration particle flow on the particle movement. Second, the interaction between a particle and the wall is studied using the ...

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  • Experimental Analysis of Tablet Properties for Discrete ...

    2013-1-25 · Coating of solid dosage forms is an important unit operation in the pharmaceutical industry. In recent years, numerical simulations of drug manufacturing processes have been gaining interest as process analytical technology tools. The discrete element method (DEM) in particular is suitable to model tablet-coating processes. For the development of accurate simulations, …

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  • Application of discrete element simulation in mechanical ...

    2021-4-1 · Nowadays, most of the works are using 3D numerical simulations of the ball movement based on the discrete element method (DEM) [, , ], because it enables to quantify in more precise ways the effects of the sequential small collisions between balls, the lack of single wall-ball collisions and the rolling and slipping of balls, situations that ...

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  • A reduced-dimensional explicit discrete element solver for ...

    2021-1-14 · We present a reduced-dimensional proper orthogonal decomposition (POD) solver to accelerate discrete element method (DEM) simulations of the granular mixing problem. We employ the method of snapshots to create a low-dimensional solution space from previous DEM simulations. By reducing the dimensionality of the problem, we accelerate the calculations of the …

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  • Discrete element method simulations of load behavior with ...

    2017-5-18 · In the last few decades, the discrete element method (DEM) has been successfully applied for describing the motion properties of particles, with many industrial applications ranging from chemical to metallurgy industries. 18 –20 In order to apply the powerful numerical method qualitatively, it is now intensively recognized that it is highly ...

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  • Motion Analysis in Tumbling Mills by the Discrete Element ...

    2014-6-30 · The media motion in a ball mill is simulated using a numerical algorithm known as the Discrete Element Method. The motion of the charge is modelling by considering the forces acting at each contact point during a collision and following the movement of …

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  • DISCRETE-TIME SYSTEMS AND CONVOLUTION

    2017-6-8 · for any element afor which the operation makes sense. In the discrete-time convolution tool, set the impulse response (h[n]) of the system to the Kronecker delta. Using various signals as input (x[n]), explain why the Kronecker delta is known as the identity element of convolution. 5

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  • Cascading Multilevel Finite-Element Analysis for Local and ...

    In this paper, we extend the cascadic multigrid method developed in ]2-3[ for the second order elliptic problem using P1 conforming element to other conforming and nonconforming elements.

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  • Advanced probabilistic structural analysis method for ...

    2012-5-17 · Curvilinear fatigue crack reliability analysis by stochastic boundary element method International Journal for Numerical Methods in Engineering, Vol. 36, No. 22 Sensitivity and Uncertainty Analyses Applied to One-Dimensional Radionuclide Transport in a …

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  • Nonlinear solution methods in Abaqus/Standard

    2016-9-21 · where F N is the force component conjugate to the N th variable in the problem and u M is the value of the M th variable. The basic problem is to solve Equation 1 for the u M throughout the history of interest. Many of the problems to which Abaqus will be applied are history-dependent, so the solution must be developed by a series of “small” increments.

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  • Simulation Of Particle Movement In A Pan Coating Device ...

    A MATLAB™-based DEM (discrete element method) code was developed to study the particle motion in a pan coating device. The code was developed as a stand-alone program and provides simulation, visualization (GUI interface), and post-processing statistical analysis of particle movement. Results of DEM simulations are compared with those obtained from video-imaging …

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  • Error Estimates on a New Nonlinear Galerkin Method Based ...

    2018-9-18 · (2011) A full discrete two-grid finite-volume method for a nonlinear parabolic problem. International Journal of Computer Mathematics 88:8, 1644-1663. (2011) Cascading Multilevel Finite-Element Analysis for Local and Nonlocal Parabolic Problems. Numerical Functional Analysis and Optimization 32:4, 436-452.

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  • An Unsymmetric-Pattern Multifrontal Method for Sparse LU ...

    2018-9-18 · (2002) A fast higher-order time-domain finite element-boundary integral method for 3-D electromagnetic scattering analysis. IEEE Transactions on Antennas and Propagation 50 :9, 1192-1202. (2002) Recent advances in direct methods for solving unsymmetric sparse systems of …

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  • Motion Analysis in Tumbling Mills by the Discrete Element ...

    2014-6-30 · The media motion in a ball mill is simulated using a numerical algorithm known as the Discrete Element Method. The motion of the charge is modelling by considering the forces acting at each contact point during a collision and following the movement of …

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  • Insights to slip behavior on rough faults using discrete ...

    [1] We simulate a range of fault slip behaviors using the discrete element method (DEM) to examine the controls on different slip modes on rough faults. Shear strain is imposed upon a 2‐D bonded particle assemblage that contains a predefined fault. Slip modes on the fault vary from creep, to slow‐slip, to stick‐slip behavior, both spatially and temporally.

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  • Investigation of Effect of Number of Lifters on ...

    The number of lifters of mill shell liners, mill rotation speed, and filling percentage of grinding media are three of the most important parameters influencing the charge behavior and the trajectory of ball motion inside the SAG mills, and consequently, their performance. In this paper, the milling operation of pilot-scale SAG mills using the discrete element method (DEM) is investigated.

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  • NSF Award Search: Award # 1832187 - Uncovering

    To perform multi-physics simulation of multiple discrete objects in unstructured construction sites, an impulse-based discrete element method will be conceptualized. This method explicitly accounts for impulse-based dynamics by realizing efficient computing, which enable balancing between significant speed-up and reasonable simulation fidelity.

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  • Digital Watermarking System based on Cascading Haar ...

    Discrete Fourier Transform (DFT): The scholar Joseph Fourier in 1822 produced what is known as Fourier analysis, which is a method to present periodic signals by using a series of sine and cosine. The transformer transfers the signal from the space of time to space of frequency and vice versa and Fourier transform is mathematically defined as ...

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  • Particle Scale Heat Transfer Analysis in Rotary Kiln ...

    Numerical study of granular materials with Discrete Element Method (DEM) Major Publications Gordon G. D. ZhouUand Charles W. W. Ng, (2010). Dimensional analysis of natural debris flows.Canadian Geotechnical Journal, 47(7): 719-729. doi: 10.1139/T09-134.

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  • Analysis of Multilayer Periodic Structures with Different ...

    2013-7-24 · In this study, numerical simulations are performed using coupled Discrete Element Method (DEM) and Computational Fluid Dynamics (CFD) to analyze heat transfer in a non-reacting rotary kiln. The microscopic models of particle-particle, particle-fluid, particle-surface and fluid-surface heat transfer are used in the analysis.

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  • Advanced probabilistic structural analysis method for ...

    2016-11-3 · Analysis of Multilayer Periodic Structures with Different Periodicities using a Hybrid FDTD/GSM Method Khaled ElMahgoub, Fan Yang, and Atef Z. Elsherbeni Center of Applied Electromagnetic System Research (CAESR), Department of Electrical Engineering, University of Mississippi, University, Mississippi, USA.

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  • Reliability allocation using probabilistic analytical ...

    2012-5-17 · Curvilinear fatigue crack reliability analysis by stochastic boundary element method International Journal for Numerical Methods in Engineering, Vol. 36, No. 22 Sensitivity and Uncertainty Analyses Applied to One-Dimensional Radionuclide Transport in a …

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  • Discrete element textures | ACM SIGGRAPH 2011 papers

    Discrete element textures. Pages 1–10. Previous ... We present discrete element textures, a data-driven method for synthesizing repetitive elements according to a small input exemplar and a large output domain. ... K., Tong, Y., Desbrun, M., Bao, H., and Guo, B. 2007. Mesh puppetry: cascading optimization of mesh deformation with inverse ...

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  • Discrete element textures | ACM Transactions on Graphics

    We present discrete element textures, a data-driven method for synthesizing repetitive elements according to a small input exemplar and a large output domain. Our method preserves both individual element properties and their aggregate distributions.

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  • FINITE DIFFERENCE METHODS FOR SOLVING DIFFERENTIAL

    2018-5-28 · Chapter 1 Introduction The goal of this course is to provide numerical analysis background for finite difference methods for solving partial differential equations.

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  • Cascading Failures — MATLAB Number ONE

    2021-3-20 · Cascading Failures Introduction The complex structure and wide interconnections of power grids make them vulnerable to disturbances such as faults, loss of transmission lines (TLs), etc. This complexity makes the control strategies more sophisticated and costly in order to maintain the stability and reliability of power grids during contingencies. For instance, the 2003 North …

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  • Efficient collective influence maximization in cascading ...

    2017-3-28 · In many social and biological networks, the collective dynamics of the entire system can be shaped by a small set of influential units through a global cascading …

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  • AN OPTIMAL MARKETING AND ENGINEERING DESIGN MODEL

    2005-8-22 · Analytical target cascading, marketing, optimal product planning, design optimization, discrete choice models, logit, conjoint analysis 1. INTRODUCTION Marketing and engineering contributions to product development are typically treated separately both in industry and in the academic literature. Research on

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  • DETC06-Michalek-Papalambros-MINLP-ATC

    2006-5-28 · any variables common to element j and its parent element, two copies are created: the target t ij, which is treated as a variable for the parent element, and the response r ij, which is an output of the child element calculated by the element’s analysis function a ij, so that r ij = a ij(x ij, t (i+1)k1, ..., t (i+1)kcij) where {k 1, …, k cij

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  • Product and Process Tolerance Allocation in Multistation ...

    2008-8-8 · Product and Process Tolerance Allocation in Multistation Compliant Assembly Using Analytical Target Cascading Zhijun Li, Zhijun Li Department of Mechanical Engineering, ... An Improved Method for Establishing the Process-Wise Quality Standard ... Tolerance Analysis of Flexible Assemblies Using Finite Element and Spectral Analysis,” Master’s ...

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  • Japanese Journal of Applied Physics, Volume 58, Number

    The Galerkin method using a Fourier series as a basis function (Galerkin spectral method) is widely employed for the numerical analysis of piezoelectric mechanical resonators such as quartz. We attempted to apply this method to the analysis of CPT resonance.

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  • Insights to slip behavior on rough faults using discrete ...

    2012-6-22 · [1] We simulate a range of fault slip behaviors using the discrete element method (DEM) to examine the controls on different slip modes on rough faults. Shear strain is imposed upon a 2‐D bonded particle assemblage that contains a predefined fault. Slip modes on the fault vary from creep, to slow‐slip, to stick‐slip behavior, both spatially and temporally.

    Get Price
  • Discrete element textures | ACM SIGGRAPH 2011 papers

    Discrete element textures. Pages 1–10. Previous ... We present discrete element textures, a data-driven method for synthesizing repetitive elements according to a small input exemplar and a large output domain. ... K., Tong, Y., Desbrun, M., Bao, H., and Guo, B. 2007. Mesh puppetry: cascading optimization of mesh deformation with inverse ...

    Get Price
  • FINITE DIFFERENCE METHODS FOR SOLVING DIFFERENTIAL

    2018-5-28 · Chapter 1 Introduction The goal of this course is to provide numerical analysis background for finite difference methods for solving partial differential equations.

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  • Uncertainty Propagation Techniques in Probabilistic Design ...

    2019-3-19 · The main idea of this technique is to perform a reliability analysis on the output response (i.e., the nonlinear response of the random variables) using FORM for a sufficiently large range of reliability targets, e.g., from β = 4 (with corresponding probability of failurePff Once the most probable point is found (we use the HMV method [2 ...

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  • Analysis of Multilayer Periodic Structures with Different ...

    2016-11-3 · Analysis of Multilayer Periodic Structures with Different Periodicities using a Hybrid FDTD/GSM Method Khaled ElMahgoub, Fan Yang, and Atef Z. Elsherbeni Center of Applied Electromagnetic System Research (CAESR), Department of Electrical Engineering, University of Mississippi, University, Mississippi, USA.

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  • Calculating the Potential for Coal Pillar Bumps Using a ...

    2015-6-28 · Simulation of Cascading Pillar Failure In Room-and-pillar Mines Using Boundary-element-method. NARMS96. Modeling Unstable Failure of Coal Pillars in Underground Mining Using the Discrete Element Method. ARMA13. Coal Pillar Loading Systems.

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  • Research Area – Innovative Design Optimization Laboratory

    2015-12-11 · Moreover, convergence can be slow because multipliers often zigzag across “ridges” of the dual function. The recent trend is to solve these problems by using the branch-and-cut method that exploits problem linearity.

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