Comparison of Methods for Modelling Vibrations of Collecting Electrodes in Dry Electrostatic Precipitators

2013 ◽  
Vol 60 (3) ◽  
pp. 431-449 ◽  
Author(s):  
Iwona Adamiec-Wójcik ◽  
Andrzej Nowak ◽  
Stanisław Wojciech
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Efficiency ◽  
Industrial Applications ◽  
The Finite Element Method ◽  
Hybrid Finite Element Method ◽  
Finite Strip ◽  
Finite Strip Method ◽  
Electrostatic Precipitators ◽  
Element Method

Abstract Dry electrostatic precipitators (ESPs) are widely used for purification of exhaust gases in industrial applications. Maintenance of their high efficiency depends primarily on periodical cleaning of the collecting electrodes (CEs). Dust removal (regeneration of CEs) is realized by inducing periodical vibrations of the electrodes. The paper presents results of vibration modelling of a system of CEs; the results were obtained by means of the finite element method, the hybrid finite element method, the finite strip method and a model formulated using Abaqus. Numerical results are compared with those obtained from experimental measurements. Conclusions concerning numerical effectiveness and exactness of the methods are formulated and reasons for differences are discussed.

scholarly journals Modelling Plates and Shells by Means of the Rigid Finite Element Method

2015 ◽  
Vol 62 (1) ◽  
pp. 101-114 ◽  
Author(s):  
Iwona Adamiec-Wójcik ◽  
Andrzej Nowak ◽  
Stanisław Wojciech
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Free Vibrations ◽  
The Finite Element Method ◽  
Hybrid Finite Element Method ◽  
Hybrid Finite Element ◽  
Rigid Finite Element Method ◽  
Plates And Shells ◽  
Single Set ◽  
Element Method

Abstract The rigid finite element method (RFEM) has been used mainly for modelling systems with beam-like links. This paper deals with modelling of a single set of electrodes consisting of an upper beam with electrodes, which are shells with complicated shapes, and an anvil beam. Discretisation of the whole system, both the beams and the electrodes, is carried out by means of the rigid finite element method. The results of calculations concerned with free vibrations of the plates are compared with those obtained from a commercial package of the finite element method (FEM), while forced vibrations of the set of electrodes are compared with those obtained by means of the hybrid finite element method (HFEM) and experimental measurements obtained on a special test stand.

A Model for the Prediction of Form Errors in Face Milling and Turning

1999 ◽  
Author(s):  
Luc Masset ◽  
Jean-François Debongnie ◽  
Sylvie Foreau ◽  
Thierry Dumont
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Cutting Forces ◽  
Experimental Validation ◽  
Industrial Applications ◽  
Face Milling ◽  
The Finite Element Method ◽  
Form Errors ◽  
Error Computation ◽  
Element Method

Abstract A method is proposed for predicting form errors due to both clamping and cutting forces in face milling and turning. It allows complex tool trajectories and workpiece geometries. Error computation is performed by the finite element method. An experimental validation of the model for face milling is presented. Two industrial applications are produced in order to demonstrate the capabilities of the method.

An Overview of the Finite Element Method on the Tool-Soil Interacting Problem of Tillage

2014 ◽  
Vol 707 ◽  
pp. 397-400 ◽  
Author(s):  
Xiao Hong Liu ◽  
Yan Yu ◽  
Li Chun Qiu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computer Aided Design ◽  
High Efficiency ◽  
Low Cost ◽  
Dynamic Effect ◽  
Research Progress ◽  
The Finite Element Method ◽  
Displacement Fields ◽  
Element Method

This article introduced the up-to-date research progress on the tool-soil interacting problem of tillage; and investigated the situation of constitutive relation usage in the finite element method (FEM). A review including the dynamic effect on the performance of tillage operation with FEM has been conducted. It showed that the virtual reality method with FEM had made much progress in evaluating the tool draft, distribution position of stress and strain, displacement fields and acceleration in soil-tool interactions, soft ware package of computer aided design of tillage tools; it will be a low cost and high efficiency assistive tool in the development procedure of tillage tools, and can be applied to study and analyze the performance of resulting prototypes.

scholarly journals Vibration Analysis of Collecting Electrodes by means of the Hybrid Finite Element Method

2014 ◽  
Vol 2014 ◽  
pp. 1-19 ◽  
Author(s):  
I. Adamiec-Wójcik ◽  
J. Awrejcewicz ◽  
A. Nowak ◽  
S. Wojciech
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electrostatic Precipitator ◽  
Equations Of Motion ◽  
The Body ◽  
The Finite Element Method ◽  
Hybrid Finite Element Method ◽  
Hybrid Finite Element ◽  
Rigid Finite Element Method ◽  
Element Method

The paper presents a hybrid finite element method of shell modeling in order to model collecting electrodes of electrostatic precipitators. The method uses the finite element method to reflect elastic features and the rigid finite element method in order to model mass features of the body. A model of dust removal systems of an electrostatic precipitator is presented. The system consists of two beams which are modeled by means of the rigid finite element method and a system of collecting shells modeled by means of the hybrid finite element method. The paper discusses both the procedure of deriving the equations of motion and the results of numerical simulations carried out in order to analyze vibrations of the whole system. Experimental verification of the model is also presented.

Calculation on Crack Parameter by Extended Finite Element Method

2014 ◽  
Vol 716-717 ◽  
pp. 751-754
Author(s):  
Bo Zhou ◽  
Dong Xue Wang ◽  
Shi Feng Xue
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Extended Finite Element Method ◽  
High Efficiency ◽  
Simulation Method ◽  
Mode I ◽  
The Finite Element Method ◽  
Extended Finite Element ◽  
Discontinuous Problems ◽  
Element Method

As a new numerical simulation method, the extended finite element method can deal with the discontinuous problems more effectively than the finite element method. In this paper, the basic theory about the extended finite element method is introduced briefly. The stress intensity factor of the crack of mode I is numerically calculated based on the extended finite element method. The numerical calculations show that the extended finite element method is an approach with high-efficiency for the problems with crack.

Application of Finite Strip Method in Vehicle Design: Part 1 of 2—Linear Buckling Analysis of Thin Walled Structures

2011 ◽  
Author(s):  
Umesh Gandhi ◽  
Stephane Roussel ◽  
K. Furusu ◽  
T. Nakagawa
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Load Capacity ◽  
The Body ◽  
Finite Strip ◽  
Strip Method ◽  
Finite Strip Method ◽  
Linear Buckling ◽  
Thin Walled ◽  
Element Method

In automotive body design use of AHSS (advanced high strength steel) has been rapidly increasing in the past few years. AHSS which has higher yield strength offers opportunity to reduce gage and hence weight reduction of the body structure. However, it is also known that for the flat thin walled members, as the stress increases and gage gets thinner, the tendency of local instability such as buckling, increases. In this presentation we will discuss finite strip method to estimate linear buckling load for thin walled sections. The finite strip method is simpler version of finite element method, it can be applied on 2D sections, requires limited computer resources and little training to use. Cross section studies based on finite strip method are compared with traditional section analysis as well as finite element method. The results indicates that, the finite strip method is equivalent to finite element method in predicting local buckling of prismatic structures, which is better estimates of the section load capacity compared current methods in CATIA based on fully plastic stress distributions.

scholarly journals Hybrid Finite Element Method and Variational Theory of Complex Rays for Helmholtz Problems

2016 ◽  
Vol 24 (04) ◽  
pp. 1650015 ◽  
Author(s):  
Hao Li ◽  
Pierre Ladevèze ◽  
Hervé Riou
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
The Finite Element Method ◽  
Variational Theory ◽  
Numerical Examples ◽  
Hybrid Finite Element Method ◽  
Hybrid Finite Element ◽  
Vibration Problems ◽  
Complex Rays ◽  
Element Method

In this paper, we consider the Weak Trefftz Discontinuous Galerkin (WTDG) method, which enables one to use at the same time the Finite Element Method (FEM) or Variational Theory of Complex Rays (VTCR) discretizations (polynoms and waves), for vibration problems. It has already been developed such that the FEM and the VTCR can be used in different adjacent subdomains in the same problem. Here, it is revisited and extended in order to allow one to use the two discretizations in the same subdomain, at the same time. Numerical examples illustrate the performances of such an approach.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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