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Lateral mechanics of an imperfect web
(Oklahoma State University, 2001-06)
A model describing the lateral mechanics of an imperfect web has been derived which brings forward information on the much debated fourth boundary condition. The model is based upon a generalized beam theory. Calculations ...
Widthwise variations in web properties and wound roll structure
(Oklahoma State University, 2005-06)
Widthwise variations in web properties affect wound roll structure. Cole & Hakiel published a two-dimensional model in 1992 which took widthwise variations in web thickness into account. Based on this publication a model ...
Modeling of edge rolls defects
(Oklahoma State University, 1999-06)
Based upon Hakiel's nonlinear orthotropic model for wound rolls, a model has been developed which takes into account widthwise variations in web properties. The model includes widthwise variations in the elastic modulus ...
Shear effects and lateral dynamics of imperfect webs
(Oklahoma State University, 2003-06)
A mathematical model describing the lateral dynamics of an imperfect web has been derived. The model includes the effect of shear forces. This was enabled by the development of a theory for beams of inhomogeneous materials. ...
Aspects of two drum winding
(Oklahoma State University, 1997-06)
Two drum winding is not yet described by any model due to the lacking expression for the so-called wound-in-tension. Through dynamic analysis equations for winding velocity and first-drum-tension, which is related to ...
Lateral mechanics of baggy webs at low tensions
(Oklahoma State University, 2005-06)
Existing mathematical models describing lateral movement of webs such as paper or plastic film, assume that the entire width of the web is carrying tension or that the web is capable of supporting compressive stresses. For ...