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Finite Element Based Edge Crack Analysis of Silicon-Steel Sheet in Cold Rolling  

Byon, Sang-Min (동아대학교 기계공학과)
Lee, Jae-Hyun (동아대학교 기계공학과 대학원)
Kim, Sang-Rok (동아대학교 기계공학과 대학원)
Jang, Yun-Chan (중앙대학교 기계공학과 대학원)
Na, Doo-Hyun (중앙대학교 기계공학과 대학원)
Lee, Jong-Bin (포스코 기술연구소)
Lee, Gyu-Taek (포스코 기술연구소)
Song, Gil-Ho (포스코 기술연구소)
Lee, Sung-Jin (포스코 기술연구소)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.22, no.6, 2009 , pp. 511-517 More about this Journal
Abstract
In this paper an finite element approach for the edge crack analysis of silicon-steel sheet during cold rolling is presented. Based on the damage mechanics, the proposed approach follows the analysis steps which are composed of damage initiation, damage evolution and fracture. Through those steps, we can find out the initiation instant of crack and resulting propagated length and shape of the crack. The material constants related to fracture is experimentally obtained by tension tests using standard sheet-type specimen and notched sheet-type specimen. To evaluate the prediction accuracy, we performed a pilot rolling test with a initially notched sheets. It is shown that the results obtained by the approach converged to the experimental one concerning about the direction and length of propagated crack. The capability of the proposed one is demonstrated through the application to the actual silicon-steel rolling mill.
Keywords
edge crack; cold rolling; silicon-steel sheet; damage initiation; damage evolution; initial crack;
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