Scientia Iranica

Scientia Iranica

Analysis of asymmetric cold rolling using finite-element method for creating at sheet

Document Type : Research Article

Authors
1 Sharif University of Technology/ Department of Mechanical Engineering; Tehran, P.O. Box 11155-9567, Iran
2 Center of Excellence in Design, Robotics and Automation, Sharif University of Technology; Academician, Academy of Sciences of IR Iran; Tehran, P.O. Box 11155-9567, Iran,
Abstract
In this paper, a simulation of asymmetric cold rolling is being presented by using an explicit analysis procedure. A two-dimensional finite element model with adaptive meshing technique has been employed to simulate asymmetrical condition, due to difference of the roll radius and velocity. Some conditions have been found to make sheet without curvature, in order to achieve this goal, different velocities have been made in rolls in each radius ratio. To validate the simulation, the results of the simulation has been compared with experimental papers which was done in the past. The effects of asymmetric process have been discussed, which is caused by radius ratio and velocity ratio on the rolling force, rolling torque and on the sheet curvature. Also the optimum velocity ratio in each radius ratio that causes the sheet without curvature was obtained. It was found that the appropriate speed ratio to produce flat sheets (i.e. sheets without curvature) is almost 1.067 being independent of the radius ratios between 1 and 1.05.
Keywords
Subjects

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Volume 25, Issue 6: Special Issue Dedicated to Professor Goodarz Ahmadi - Serial Number 6
Transactions on Mechanical Engineering (B)
November and December 2018
Pages 3133-3140

  • Receive Date 08 October 2017
  • Revise Date 30 April 2018
  • Accept Date 07 July 2018