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Información tecnológica

versão On-line ISSN 0718-0764

Resumo

SAAVEDRA, Francisco A  e  SAAVEDRA, Pedro N. Dynamic Model of the Press Nip of Paper Machines. Inf. tecnol. [online]. 2013, vol.24, n.4, pp.75-84. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642013000400009.

The objective of this paper is to provide the physical bases that allow more accurate diagnosis of the conditions of paper machines for better maintenance. The diagnostic of the mechanical condition of press felts and rolls in the press section of paper machines using the classical vibration analysis is complex, so maintenance of these elements is done in a preventive and not predictive way. In this work a mathematical model that describes the dynamic behavior of the presses in paper machines is developed. Through numerical simulations, the motion equation of the proposed model is solved and compared with measurements done in industrial machines. It is concluded that the proposed model properly describes the vibratory behavior of presses and provides the vibratory symptoms that allow the diagnosis of the problems that they may have.

Palavras-chave : vibration analysis; dynamic model; predictive maintenance; paper machines.

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