Dimensioning of rollers in paper industry

Diplomska naloga opisuje preračun valjev, ki so del kontinuirnega papirnega stroja v podjetju Papirnica Količevo d.o.o. V nalogi je predstavljen celoten postopek od preučevanja obstoječe dokumentacije in računalniškega modeliranja valjev do numeričnega preračuna po metodi končnih elementov. V nadaljevanju je izveden še analitični preračun kritičnih mest in določitev faktorjev varnosti. Vzporedno s praktičnim delom naloge je predstavljeno tudi teoretično ozadje, ki pripomore k razumevanju vsebine izvedenega preračuna. Na koncu naloge so predstavljeni rezultati obeh izvedenih metod (napetosti in pomiki) za vsak valj posebej. This diploma work describes the calculation of rollers, which are part of a continuous paper machine at the company Papirnica Količevo d.o.o. The thesis presents the whole process from the study of the existing documentation and computer modelling of the rollers to the numerical calculation according to the finite element method. Furthermore, analytical calculations of critical sites and determination of safety factors have been carried out. In parallel with the practical part of the task, the theoretical background is also presented, which helps to understand the content of the performed calculations. At the end of diploma, the results of both performed methods (stress and strain) are presented, separately for each roller.