Verification of Circumferential and Axial Strains in Axisymmetric Wound Roll Models

Abstract

The primary goal of this study was to verify the axial and circumferential strains in axisymmetric wound roll models generated by Cagri Mollamahmutoglu's model, i.e. whether his model predicts the Machine Direction and Cross Machine Direction strains correctly or not. In order to do this two different widths of web were tested, a 6 inch wide web and a 24 inch wide web. The model was run to obtain strains and a comparison was made between the experimental strains and the model strains. The model made reasonably good predictions for MD strains in both cases (6 inch and 24 inch). However, in case of CMD strains the model was not very accurate. In case of CMD strains for the 6 inch web, the final saturation value was off and in case of CMD strains for the 24 inch web; the contour of the model output did not match the contour of the experimental results.