Analysis of Fabric Deformation in a Roll-Making Operation

Abstract

Fabric deformation in the roll-making operation and the resulting state of stress in the fabric roll are analyzed through a discrete continuum model. The fabric elastic properties are assumed to be linear and anisotropic. Only the static case is considered, wherein dynamic effects in roll making are neglected. Effects of fabric Young's modulus in the warp and thickness directions, tube elastic modulus, fabric Poisson's ratios, and fabric weight per unit area on the state of stress inside the roll are parametrically investigated. Numerical results are obtained and discussed for each parameter. Theo retical results show that when a constant in-plane tension is applied for winding, the fabric may actually come under in-plane compression inside the roll. This observation is believed to be important, since it may reveal one of the causes of possible buckling and unevenness inside the roll. The theoretical model and the numercial solution procedures developed can easily be modified to incorporate nonlinear load-deformation behavior of fabrics.

Get full access to this article

View all access options for this article.

References

Batra, S.K. , Lee, D.S. , and Backer, S. , On the Stress Analysis of Cylindrically Wound Packages: The case of a Warp Beam, Textile Res. J. 46, 453-459 (1976).

Beddoe, B. , Anistropy of Yarn Wound on a Flanged Tube, J. Strain Anal. 2, 207-212 (1967).

de Jong, S. , Snaith, J.W. , Michie, N.A. , A Mechanical Model for the Lateral Compression of Woven Fabrics, Textile Res. J. 56, 759-767 (1986).

Hoehl, B. , Winding Problems in the Textile Industry, Melliand Textilber 38, 202-205 (1957).

Nakashima, T. , Yarn Tension in Winding Mechanism, J. Textile Mach. Soc. Jpn. 14, 75-81 (1968).

Neal, B.G. , Behavior of Filament Yarn Wound on a Flanged Cylinder, J. Strain Anal. 2, 213-219 (1967).

Price, A.L. , Compressional Behavior of Stacked Woven Fabrics, Masters thesis, College of Textiles, North Carolina State University, 1989.

Steinberger, J. , Quality Improvement in the Textile Industry Through Ongoing Monitoring and Control of the Fabric Tension at Machines, Textil Prax. Int. 40, 57-79 (1985).

Unger, J. , Modem Winding Systems for Textiles in Sheet Form, Textilbetrieb 3, 76-83 (1985).

10.

Vicentini, V. , Calculation of the Elastic Deformation of Textile Beams During Winding, J. Strain Anal. 4, 48-56 (1969).