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- 저자 : Haihai Lin (검색결과 1 건)
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Mathematical Modelling of Online Warping Height of Cold-Rolled Thin Strip Steel
Yanglong Li,Jie Wen,Haihai Lin,Meng Yu,Fengqin Wang 한국강구조학회 2022 International Journal of Steel Structures Vol.22 No.4
The warping deformation is a common shape defect for thin strip steel. The warping form is shown as type-C for online strip with tension, whereas it is generally type-L for offl ine steel sheet without tension. A mathematical model between type- C warping height for online strip and type-L warping height for offl ine steel sheet was established and validated by fi eld experiments. The predicted offl ine warping height was agreed well with the measured results, and the average relative error was about 5.4%. There is a linear relationship between online and offl ine warping heights. The infl uence factors on online warping height were also discussed. At the same offl ine warping value of steel sheet, the online warping value increases with the increase of warping correction factor and the decrease of the sampling sheet length. The online warping height is also aff ected by width and Poisson’s ratio of strip. This model could be used to predict the online warping height of steel strip based on the offl ine warping height of steel sheet. Also the offl ine warping height can be evaluated according to the online warping state. It lays a primary theoretical foundation for the warping relationship between online strip and offl ine steel sheet.
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