The Analysis of Torsional Vibration of Coiler Drive System

2013 ◽  
Vol 455 ◽  
pp. 232-235
Author(s):  
Xue Wen Sun ◽  
Hai Bo Yang
Keyword(s):  
Cold Rolling ◽  
Three Dimensional ◽  
Drive System ◽  
The Finite Element Method ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Design And Manufacturing ◽  
Rolling Production ◽  
Dynamics Characteristic

Coiler is a very important equipment in the aluminum cold rolling production line. It plays an important role in improving the quality of the strip. In this essay, taken the aluminum cold rolling coiler drive system as the research object, in order to studying its dynamics characteristic, three-dimensional model has been built based on the finite element method. With the model, the aluminums weight has been verified, frequency and modal have been discussed, and the dangerous speed zone has been built by the first frequency. The result could serve as theoretical base for coiler design and manufacturing process.

scholarly journals Application of stakeholder theory to corporate environmental disclosures

2009 ◽  
Vol 7 (1) ◽  
pp. 394-410 ◽  
Author(s):  
Pamela Kent ◽  
Christopher Chan
Keyword(s):  
Social Responsibility ◽  
Stakeholder Theory ◽  
Mission Statement ◽  
Three Dimensional ◽  
Annual Reports ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Environmental Disclosures ◽  
Significant Support

Ullmann’s (1985) three-dimensional model of social responsibility disclosure is tested to determine whether it can be operationalized to help explain the quantity and quality of environmental disclosures in Australian annual reports. The stakeholder power dimension of Ullmann’s framework is significant in explaining environmental disclosures while content of the mission statement and existence or otherwise of environmental or social responsibility committees also find strong statistically significant support in the results. Ullmanns’ stakeholder theory has previously been applied to explain social disclosures in general (Roberts, 1992) and is an important theory because it introduces a measure of strategy. The current paper demonstrates how this theory can be applied to a specific social disclosure using variables that are idiosyncratically applicable to the types of disclosures.

Study of ECAE Process by Using FEM

2006 ◽  
Vol 526 ◽  
pp. 193-198 ◽  
Author(s):  
Rodrigo Luri ◽  
C.J. Luis-Pérez
Keyword(s):  
Cross Section ◽  
Strain Field ◽  
Equal Channel Angular Extrusion ◽  
Three Dimensional ◽  
Extrusion Process ◽  
The Finite Element Method ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Circular Section ◽  
Processed Material

In this work, the strain field attained by using a severe plastic deformation (SPD) process called equal channel angular extrusion (ECAE) is studied by the finite element method (FEM). The three-dimensional model with circular section includes shear friction between the part and the die, the material strain hardening behaviour and a rigid-deformable contact between the billet and the die. In the ECAE process the part is extruded through two channels with similar diameter that intersect at an angle. When the extrusion process has been performed, the processed material remains it cross section, so there is not any geometric limitation to achieve the desired plastic strain. There are different ways of processing the material by using the ECAE process; those ways of processing are called routes. In this work two passages of route C have been simulated. Using route C means that the billet has been rotated 180º between each passage. Deformations imparted to the processed material have been calculated and a comparison with experimental results has been carried out.

Numerical Investigation of Curing Process in Reaction Injection Molding of Rubber for Quality Improvements

2011 ◽  
Vol 462-463 ◽  
pp. 1206-1211 ◽  
Author(s):  
Seyyed Mohammad Javadi ◽  
Mohammad Moghiman ◽  
Mohammad Reza Erfanian ◽  
Naseh Hosseini
Keyword(s):  
Three Dimensional ◽  
Measured Data ◽  
Production Costs ◽  
Curing Process ◽  
Quality Improvements ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Final Temperature ◽  
Reaction Injection Molding

A large number of rubber products are formed into their final shape by vulcanization. In particular, curing process of rubber is the final step in manufacturing many rubber products and determines both the quality of the resulting product as well as production costs. This paper is devoted to the simulation of rubber curing process in a three-dimensional model. The effects of final temperature of mold are investigated on curing process and quality of final product. The results were compared with the experimentally measured data, which confirmed the accuracy and applicability of the method.

Dynamic Response of Bridge Girder and Shear Keys Subjected to Pounding during Earthquakes

2013 ◽  
Vol 339 ◽  
pp. 515-519
Author(s):  
Lu He ◽  
Lu Zhang ◽  
Jia Yong Chen ◽  
Chu Dong Pan ◽  
Yu Xiang Liu
Keyword(s):  
Dynamic Response ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Movement Characteristics ◽  
Shear Keys ◽  
Continuous Girder Bridge ◽  
Bridge Girder ◽  
Girder Bridge

Shear keys have been widely used to control the damage in abutments and piles during earthquakes. To investigate the dynamic response of bridge girder and traverse shear keys subjected to pounding, a three dimensional model of continuous girder bridge is developed in this study. With the assistance of the finite element method program ANSYS and the package LS-DYNA, the pounding between bridge girder and shear keys is simulated. Subsequently, the stress and displacement responses of the model are analyzed, and the movement characteristics are presented.

Finite Element Analysis on the Steel Transmission Pole

2012 ◽  
Vol 594-597 ◽  
pp. 808-811 ◽  
Author(s):  
Yan Hai Wang ◽  
Wei Jiang ◽  
Hong Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Traditional Method ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Strength And Deformation ◽  
Reliable Basis

At present, the finite element method is used to calculate the strength and deformation of the steel transmission pole less. Using ANSYS to model steel transmission pole, loading, analysis, the results show that, the traditional method of strength calculation and finite element analysis results are very close, the traditional method of deformation calculation and finite element analysis results has a certain bias. As long as the establishment of three-dimensional model of the steel transmission pole, the applied load and boundary conditions to meet the actual, finite element analysis can provide a more reliable basis for the design and verification of the steel transmission pole.

Numerical Simulation on Drawing Deep of Cylindrical Pieces Based on Dynaform

2014 ◽  
Vol 684 ◽  
pp. 252-258 ◽  
Author(s):  
Jun Hong Wang ◽  
Xu Dong Bao ◽  
Hai Mei Feng ◽  
Chang Du
Keyword(s):  
Numerical Simulation ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Forming Process ◽  
Minimum Thickness ◽  
Optimum Parameters ◽  
Design And Manufacture ◽  
The Impact

Abstract: The design and manufacture of mold often rely on the experience of the designers, which led to the fact that the mold needs to be repeatedly debugged and corrected. Numerical simulation technology enables the simulation of the forming process of sheet metal and prediction of defects in design, thus to improve labor efficiency, save time and reduce costs. In this paper, the software Dynaform is used as a platform and a three-dimensional model is built to numerical simulate and analyze the drawing deep of a typical thin-walled cylindrical piece.Orthogonal experimentis adopted to analyze the impact of BHF, punching speed and punch-die gap on forming quality of the drawing pieces. With minimum thickness and wrinkling as indicators, the impact of various factors is analyzed and a set of optimum parameters is found out that is, BHF is 20kN, punching speed is 2000mm / s and punch-die gap is 0.9mm.

Sign in / Sign up

Export Citation Format

Share Document