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Large deformation winding models
(Oklahoma State University, 2009-06)
Almost all winding models incorporate the assumption of small linear deformations and strain in development. As such these models treat the addition of a layer of web to a winding roll with linear analysis using linear ...
Impact of thickness measurement on predicting residual stresses due to winding
(Oklahoma State University, 2015-06)
Axisymmetric winding models were initially developed to deal with web thickness variations that were manifested in the machine and cross machine direction. The web thickness variation is a prime input to these models. Small ...
Axisymmetric wound roll models
(Oklahoma State University, 2009-06)
Axisymmetric wound roll models provide the greatest definition of wound roll internal stresses to date. Simple one dimensional models can provide the user with radial profiles of pressure and circumferential stress as a ...
Axisymmetric nonlinear transient thermo-elastic winding model
(Oklahoma State University, 2015-06)
Temperature is among the most important environmental factors which play a crucial role on the mechanical state of wound rolls of web material. Existing literature include studies concerning the thermal characterization ...
Surface compression of wound rolls
(Oklahoma State University, 2013-06)
Stress levels and profiles in the vicinity of contact between a wound roll and a nip or a rigid surface are important for the quality of the product during manufacturing or storage stages. Excessive or insufficient pressure ...
Nip impinged center-winding including a nonlinear beam model
(Oklahoma State University, 2017-06)
Nip pressure is commonly applied in winding processes in order to maintain structural stability and prevent air entrainment at high speeds. In nip induced winding modeling nip and roll are assumed to be beams with ...
Coupling of winding models and roll quality instruments
(Oklahoma State University, 2015-06)
Winding models have been under development for roughly 50 years. These models have become mature in their ability to predict the internal residual stresses within a wound roll as a function of winder type, winder operating ...