کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
831650 908108 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of different yield criteria on prediction of wrinkling initiation of interstitial-free galvanized steel sheet
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of different yield criteria on prediction of wrinkling initiation of interstitial-free galvanized steel sheet
چکیده انگلیسی

Thin interstitial-free (IF) galvanized steel sheets have great usage in auto industry due to their high formability and corrosion resistance. However presence of wrinkle waves in deep drawn parts of thin IF steel sheets is a common challenging issue. Achieving a reliable method to predict the wrinkling onset enables the manufacturers to avoid wrinkling by modification of forming parameters. In the present study, sidewall wrinkling of an IF-galvanized steel sheet was both analytically and experimentally examined during a conical cup wrinkling test. Using an energy method approach together with a newly developed deflection function, Hosford and Hill-1948 yield criteria were employed to predict the critical values of stress and cup height at the onset of wrinkling. According to the obtained results, applying Hill-1948 yield criterion resulted in prediction of wrinkling onset closer to the experimental value than Hosford yield criterion. It was also found that the newly presented deflection function has a great suitability for prediction of the real status of wrinkling phenomenon.


► Using Hill-1948 yield criterion resulted in better prediction of wrinkling compared to Hosford criterion.
► The new presented deflection function can predict the shape of the deflection curve appropriately.
► The new presented deflection function predicts the wrinkling initiation close to the experiments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 32, Issue 6, June 2011, Pages 3370–3376
نویسندگان
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