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Influence of speed-up and speed-down on internal stresses of wound rolls in web handling process
Author(s)
Jeenkour, Puttha
Date Issued
February 23, 2012
Type
Conference Paper
Abstract
In web winding process, the effects of speed-up and speed-down on internal stresses of wound roll have been investigated. The air-entrainment can be obtained theoretically using the modified nonlinear Hakiel model. In this research work, air-entrainment model established by Hamrock and Dowson was applied to estimate the initial air film layers into a wound roll in the winding system with a nip-roller. Moreover, the characteristics of a wound roll were examined under varying tension and varying speed conditions. The numerical results showed the radial stress, tangential stress, and friction force distributions at central inside a wound roll under the condition for a wound roll without wrinkle and slippage phenomena. © (2012) Trans Tech Publications.
Citation
Advanced Materials Research, 452-453, 1262-1266, 2012