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Development of a finite element analysis program for roller leveling and application for removing blanking bow defects of thin steel sheet SCIE SCOPUS

Title
Development of a finite element analysis program for roller leveling and application for removing blanking bow defects of thin steel sheet
Authors
Park, KCHwang, SM
Date Issued
2002-01
Publisher
IRON STEEL INST JAPAN KEIDANREN KAIKAN
Abstract
For the analysis of roller leveling process and application for controlling blanking bow defects in a thin steel sheet, a finite element analysis program modeling large deformation of shell has been developed. This program for elastic-plastic large deformation analysis of sheet includes spring-back analysis as well as contact treatment between sheet and rolls of roller leveler. This is verified by the simple leveling experiment with 5 rolls at. laboratory. The, residual curvatures of strip predicted by finite element analysis are within 20% error range of, the experiment. An optimum entrance intermesh condition, that is able to remove the blanking bow or deviation of curvature of a sheet, are found by finite element analysis for initially curved three strips by applying virtually divided strip model. The curvature difference of strips after leveling is decreased as increasing the entrance intermesh,of roller leveler, and the optimum intermesh value is affected by the roll diameter and arrangement. The predicted optimum intermesh values are consistent with the experimental results. The residual stress distributions after leveling is predicted numerically by the curvature of strip obtained from the finite element analysis. It is found that the change in the residual stress distributions due to leveling is also markedly affected by the intermesh condition.
Keywords
blanking bow; spring-back; finite element analysis; residual stress; roller leveling; intermesh
URI
https://oasis.postech.ac.kr/handle/2014.oak/18892
DOI
10.2355/isijinternational.42.990
ISSN
0915-1559
Article Type
Article
Citation
ISIJ INTERNATIONAL, vol. 42, no. 9, page. 990 - 999, 2002-01
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황상무HWANG, SANG MOO
Dept of Mechanical Enginrg
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