Identification of prints elastic parameters

• Published in: Mechanika (Kaunas, Lithuania : 1995) Vol. 20; no. 5; pp. 476 - 479
• Main Authors: Grigaliūnienė, S., Turla, V., Ragauskas, P., Kilikevičius, A., Sidaravičius, J., Jurkonis, E.
• Format: Journal Article
• Language: English
• Published: 01.01.2014
• Subjects: Coating; Finite element method; Genetic algorithms; Mathematical models; Methodology; Prints; Resonant frequency
• ISSN: 1392-1207; 2029-6983
• DOI: 10.5755/j01.mech.20.5.7526

Elastic characteristics of plain paper differ from prints elastic characteristics due to coating. For the identification of the elastic characteristics of prints a methodology based on experimental vibration tests and calculations using FEM mathematical model is involved. Using special equipment it was found which frequencies of samples corresponds to first eight natural modes and frequencies. Using FEM and genetic algorithm it was theoretically calculated at which elastic parameters same natural frequencies and modes are obtained. This methodology was used to identify the elastic characteristics of six different prints. It has been shown the possibility of practical application of such methodology and it was found that elastic characteristics of different prints differ in the longitudinal (machine) direction of the paper.Original Abstract: Spaudiniu tamprumo rodikliai skiriasi nuo gryno popieriaus tamprumo rodikliu del padengto dazu sluoksnio. Siu rodikliu nustatymui panaudota metodika, paremta eksperimentiniais vibraciniais bandymais ir skaiciavimais, naudojant BEM matematini modeli. Eksperimentiniu budu, naudojant specialia iranga, buvo nustatyta, kokie dazniai atitinka bandiniu pirmasias astuonias savuju virpesiu modas bei daznius. Naudojant BEM matematini modeli ir genetinius algoritmus teoriskai paskaiciuota, prie kokiu tamprumo rodikliu gaunami tie patys dazniai ir tos pacios virpesiu modos. Tuo budu identifikuoti spaudiniu tamprumo rodikliai sesioms skirtingoms spaudiniu rusims. Irodyta tokio metodo taikymo galimybe ir nustatyta, kad pagrindinai spaudiniu tamprumo rodikliai skiriasi isilgine popieriaus liejimo kryptimi.