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http://dx.doi.org/10.5228/KSPP.2007.16.6.438

Development of Prediction Model for Sidewall Curl in Sheet Meta1 Forming(II)-Experimental Validation  

Joo, B.D. (부산대학교 정밀기계공학과)
Park, H.K. (부산대학교 정밀기계공학과)
Kim, D.W. (부산대학교 정밀기계공학과)
Moon, Y.H. (부산대학교 정밀기계공학과/정밀정형 및 금형가공)
Publication Information
Transactions of Materials Processing / v.16, no.6, 2007 , pp. 438-442 More about this Journal
Abstract
Sidewall curl is the curvature that results from non-uniform through-thickness strain present in the sheet stamping process which involves material flow over a die radius. In order to understand and control curl for tight fit-up tolerances, an analytical model that can provide a reliable measure for the amount of curl would be very helpful. In this study, a model is developed based on the moment-curvature relationship during bending-under-tension operations. For the verification of analytical model, sidewall curl is experimentally measured after deformation of a strip using a bending-under-tension test system. The results show a consistent relationship between the theoretically predicted value and the experimentally obtained one, especially in regions of high curl.
Keywords
Sidewall curl; Curl curvature; Analytical model; Bending-under-tension; Moment-curvature;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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