On the Mechanics of Axially Moving Materials Juha Jeronen What is mathematical modeling? How do the different approaches - analytical versus numerical - enhance our understanding of physical phenomena? Why are continuum models still used in the 21st century? Starting by touching upon these questions, this presentation focuses on the dynamics and instability effects of axially moving materials, as encountered in the context of papermaking. The emphasis is on basic theoretical research concerning vibration analysis in intervals where the paper web travels with no mechanical support. The problems are formulated using linearized Kirchhoff (classical) plate theory. Two- and three-dimensional cases are considered. Research results obtained during the last year and half are presented, including analytical considerations and results from numerical simulations. In the conclusion, some open problems are summarized and possible directions for future research are presented. No background in continuum mechanics is assumed, so everyone is welcome!