Forrest, A. W., Jr.International Conference on Web Handling (1995)2019-11-052019-11-051995-06Forrest, A. W., Jr. (1995, June). Wound roll stress analysis including air entrainment and the formation of roll defects. Paper presented at the Third International Conference on Web Handling (IWEB), Stillwater, OK.https://hdl.handle.net/20.500.14446/321711Numerous procedures have been developed to determine the stresses inside wound rolls of film. These typically use factors such as winding tension, film thickness and film properties to calculate the stresses. The calculation presented here includes provisions for entrained air and methods to predict the formation of common roll defects. The entrained air pressure, the air gap and the winding tension are used to fully define the surface boundary condition during winding. Incipient buckling criteria are developed to predict deformations induced by transverse and circumferential stresses. the results include radial pressures, circumferential and transverse direction stresses, buckling defect formation indicators and the entrapped air pressure for the plane-strain case.application/pdfIn the Oklahoma State University Library's institutional repository this paper is made available through the open access principles and the terms of agreement/consent between the author(s) and the publisher. The permission policy on the use, reproduction or distribution of the article falls under fair use for educational, scholarship, and research purposes. Contact Digital Resources and Discovery Services at lib-dls@okstate.edu or 405-744-9161 for further information.Conference proceedings