Geometric Indicators of Flexible Slice Lip

Abstract:

The paper is thematically connected with paper making machines. This type of the machine is equipped with a head which has a flexible slice lip for skimming the pulp applied to produce the paper. The definition of geometric features of the slice lip is a key issue. The slice lip should be made of material which is resistant to external factors, and designers want to obtain a high flexibility of this element. It is possible to get a high flexibility by forming a proper shape of the slice lip. The paper presents the proposal of dimensionless geometric indicators which combine basic geometric parameters of the slice lip. These indicators are the following: indicator of the cross-section, indicator of the length and indicator of the length of the transverse notch. FEM strength analyses were done – the aim of these analyses was the determination of the stress state and maximum deflection of the slice lip. The authors have analysed the slice lip with holes for mounting the actuators and the slice lip and with transverse notches for increasing its flexibility. The results were presented in the form of graphs.

• Periodical: Applied Mechanics and Materials (Volume 816)
• Pages: 188-194
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.816.188
• Online since: November 2015
• Authors: Krzysztof Talaśka*, Ireneusz Malujda, Dominik Wilczyński, Jan Górecki, Paweł Tarkowski, Mateusz Kukla
• Keywords: FEM Analysis, Flexible Slice Lip, Paper Making Machine

References

[1] S. R. Duncan, J M. Allwood, W P. Heath, K W. Corscadden, Dynamic Modeling of Cross-Directional Actuators: Implications for Control, IEEE Transactions on control systems technology, Vol. 8, No. 4, July 2000, pp.667-675.

DOI: 10.1109/87.852912

[2] D. W. Yang, M.S. Davies, G.E. Stewart, G.A. Dumont, Modeling paper machine cross direction slice lip responses close to sheet edges, Pulp & Paper Canada, 2006, p.43 – 47.

[3] J. Fan, G.E. Stewart, G.A. Dumont, Model predictive cross directional control using a reduced model, Control Systems 2002, Stockholm, Sweden, June 2002, p.65–69.

[4] J. Ghofraniha, M.S. Davies, G.A. Dumont, CD Response Modeling for Control of a Paper Machine, Proceedia of the 4th IEEE Conference on Control Applications, Albany, New York. pp.107-112, September (1995).

DOI: 10.1109/cca.1995.555650

[5] K. A. Cutshall, Cross-Direction Control, Paper Machine Operations, 3rd ed. Atlanta, GA: Joint Textbook Committee of the Paper Industry of United States and Canada, 1991, vol. 7.

[6] K. Cutshall, Paper Machine Operations, Pulp and Paper Manufacture, 3rd ed., Atlanta and Montreal, 1991, vol. 7, ch. XVIII: Crossdirection control, p.472–506.

[7] J. Fan, G E. Stewart, Fundamental Spatial Performance Limitation Analysis of Multiple Array Paper Machine Cross-directional Processes, American Control Conference, June 8-10, 2005, Portland, USA, p.3644 – 3649.

DOI: 10.1109/acc.2005.1470540

[8] G.E. Stewart, D.M. Gorinevsky, G.A. Dumont, Feedback Controller Design for a Spatially-Distributed System: The Paper Machine Problem IEEE Transactions on control systems technology, Vol 11, No 5, 2003, pp.612-628.

DOI: 10.1109/tcst.2003.816420

[9] K. Kristinsson, G. A. Dumont, Cross-directional control on paper machines using Gram polynomials, Automatica, vol. 32, no. 4, 1996, p.533–548.

DOI: 10.1016/0005-1098(95)00181-6

[10] Ghofraniha J., Davies M.S. and Dumont G.A., Modeling of Sheet Formation Including Edge Effects on Paper Machines, IEEE International Conference on Systems, Man and Cybernetics, Vancouver, pp.3363-3367, October (1995).

DOI: 10.1109/icsmc.1995.538305

[11] A. Guesalaga, F. Rodriguez and H.W. Kropholler, Method for recognition of Shrinkage using Image Processing Celul. Pap., Chile, Vol. 8, (3), 1992, p.10.

[12] A.P. Featherstone, J.G. VanAntwerp, R.D. Braatz, Identification and Control of Sheet and Film Processes, Springer, (2000).