FEM-Based Analysis of Micro-Structure Parameters for Roll Forming on Aluminum Alloy Sheet

2013 ◽  
Vol 762 ◽  
pp. 763-768
Author(s):  
Zhi Qing Hu ◽  
Ji Zhao ◽  
Zeng Ming Feng
Keyword(s):  
Three Dimensional ◽  
Alloy Sheet ◽  
Roll Forming ◽  
Micro Structure ◽  
Structured Surfaces ◽  
Micro Patterning ◽  
Dimensional Finite Element ◽  
Marine Applications ◽  
Three Dimensional Finite Element ◽  
Micro Structures

Micro-structured surfaces with drag reduction, desorption, and excellent optical performance are widely used in the field of automotive, aerospace, marine applications. Therefore, the manufacturing of the micro-structure on the metal surface is of high impotance. Although the processing methods for micro-patterning of surfaces have progressed in recent years, micro-structure processing is still not used on large metal surfaces. In this paper, a method of roll forming micro-structure on the plate surface is proposed. A simulation model for micro-structure roll forming (MRF) was presented by using three-dimensional finite element method (FEM). The strain and stress, and the displacements caused by micro-structure were analyzed. The results provide theoretical guidance for the design of different micro-structures and the sequence of their processing.

Effect of Initial Thickness to Cut End Deformation of Hat Shape Channel Steel by Roll Forming

2014 ◽  
Vol 622-623 ◽  
pp. 1132-1138 ◽  
Author(s):  
Siti Nadiah binti Mohd Saffe ◽  
Nagamachi Takuo ◽  
Ona Hiroshi
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Three Dimensional ◽  
Roll Forming ◽  
Initial Thickness ◽  
Front End ◽  
Element Simulation ◽  
Metal Thickness ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

A hat channel, also called a furring channel, is a channel with a bottom horizontal web and two vertical flanges, as well as an outward lip that is fabricated by roll forming. When the channel is cut off at a specified length, the edge of the product will change due to the release of residual stress, and this change is generally called cut end deformation. The cut end deformation of channel steel was investigated via experiment and three-dimensional finite-element simulation. The effect of initial thickness on the cut end deformation of hat channel steel was studied. For hat channel steel, the deformations at the front end and back end increase when the sheet metal thickness increases. However, the influence of initial thickness on the cut end deformation of hat-shape channel steel is small.

scholarly journals Collapse Analysis of ERW Pipe Based on Roll-Forming and Sizing Simulations

2019 ◽  
Vol 7 (11) ◽  
pp. 410 ◽  
Author(s):  
Seong-Wook Han ◽  
Yeun Chul Park ◽  
Soo-Chang Kang ◽  
Sungmoon Jung ◽  
Ho-Kyung Kim
Keyword(s):  
Residual Stress ◽  
Limit State ◽  
Three Dimensional ◽  
Material Model ◽  
Nonlinear Material ◽  
Roll Forming ◽  
Two Factors ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Api 5L X70 Steel

The demand for electric resistance welded (ERW) pipe for deep-water installation has increased, which necessitates a higher degree of accuracy in evaluating the strength of pipe in order to satisfy the design limit state, otherwise referred to as the collapse performance. Since ovality and residual stress governs the collapse performance, an accurate evaluation of these factors is needed. An analytical approach using a three-dimensional finite element method was proposed to simulate the roll-forming and sizing processes in manufacturing ERW pipe. To simulate significant plastic deformation during manufacturing, a nonlinear material model that included the Bauschinger effect was incorporated. The manufacturing of ERW pipe made of API 5L X70 steel was simulated and analyzed for collapse performance. Controlling the ovality of the pipe significantly decreased the amount of pressure that would cause a collapse, whereas the effect of residual stress was minor. These two factors could be improved via the use of a proper sizing ratio.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

Tire Modeling by Finite Elements

1992 ◽  
Vol 20 (1) ◽  
pp. 33-56 ◽  
Author(s):  
L. O. Faria ◽  
J. T. Oden ◽  
B. Yavari ◽  
W. W. Tworzydlo ◽  
J. M. Bass ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Rolling Contact ◽  
Test Problems ◽  
State Behavior ◽  
Normal Contact ◽  
New Developments ◽  
Applied Torque ◽  
Dimensional Finite Element ◽  
Tire Modeling ◽  
Three Dimensional Finite Element

Abstract Recent advances in the development of a general three-dimensional finite element methodology for modeling large deformation steady state behavior of tire structures is presented. The new developments outlined here include the extension of the material modeling capabilities to include viscoelastic materials and a generalization of the formulation of the rolling contact problem to include special nonlinear constraints. These constraints include normal contact load, applied torque, and constant pressure-volume. Several new test problems and examples of tire analysis are presented.

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