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Degree

MS, University of Cincinnati, Engineering : Mechanical Engineering, 2006.

Abstract

Wavy surfaces are formed frequently in thin plates produced by a rolling process in steel mills. As an excessive waviness causes a significant loss of the product value, an effective measure to prevent the occurrence of waves by controlling process parameters has been desired by the steel industry. The underlying mechanism of the wave-formation is post-buckling of the plate induced by residual stresses. Therefore, development of an efficient analysis method to predict the buckling amplitude and wavelength in thin plates was considered very important. An analysis method was developed in this work by combining a pre-buckling analysis to calculate the wavelength and a post-buckling analysis to calculate the buckling amplitude. Because of the extremely complex nature of the problem and the need for simplicity due to the ultimate goal of embedding the method for an on-line control, a few major simplifications of the problem had to be used in the development of the analysis method. In addition to qualitative discussions on the implication of these simplifications, the analysis results were interpreted in comparison with the empirical criterion the steel industry has been widely for an indirect, partial validation of the developed method.

Subject Headings

Engineering, Mechanical

Keywords

Bending waves; plate buckling; post buckling analysis; rolling process

Advisor

Dr. Jay Kim

Pages

93p.

Document number: ucin1148319302
Permalink: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1148319302

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