000013553 001__ 13553
000013553 005__ 20161114165846.0
000013553 04107 $$aeng
000013553 046__ $$k2011-05-25
000013553 100__ $$aWiendl, S.
000013553 24500 $$aA Dynamical Model of a Paper Calendering Unit with Surface Wear

000013553 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013553 260__ $$bNational Technical University of Athens, 2011
000013553 506__ $$arestricted
000013553 520__ $$2eng$$aCalendering is one of the last steps in the manufacturing process of paper. The operation is performed by passing the paper web through a nip formed by two rotating cylinders pressed against each other. Considering printability and appearance, very fine surface properties have to be achieved. There are different types of calendering units varying in the number of cylinders. In modern soft calenders usually one of the cylinders has a steel core with a plastic coating while the other cylinder is not coated but heated. A main problem that sometimes interferes with the calendering process is called barring. It can lead to grooves which in extreme cases arise within days on the plastic coated rolls, resulting in short operation times and high operating costs. It is commonly believed that the grooves arise due to wear. Obviously there exists an interrelation between the dynamical behavior of the system and the wear in the contact area. For certain production speeds, self-enhancing effects are observed. Here the worn surface causes varying contact forces such that an internal resonance occurs. Within the framework of this paper, a dynamical model of a calendering unit is developed. The model features a simplified description of the contact area as well as the modeling of surface wear. By performing a stability analysis, production speeds corresponding to an internal resonance are identified. Also a design approach for influencing barring is simulated.

000013553 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013553 653__ $$abarring, paper calendering unit, wear, internal resonance, synchronization

000013553 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013553 720__ $$aWiendl, S.$$iSpelsberg-Korspeter, G.$$iHagedorn, P.
000013553 8560_ $$ffischerc@itam.cas.cz
000013553 8564_ $$s626154$$uhttps://invenio.itam.cas.cz/record/13553/files/277.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 30 The Synchronization Phenomenon in Modern Structural Dynamics: Wind, Flow, Ice and Pedestrian - Induced Vibrations of Structures.
000013553 962__ $$r13401
000013553 980__ $$aPAPER