Regensburg 2002 – wissenschaftliches Programm
SYAD 2.7: Poster
Donnerstag, 14. März 2002, 15:30–18:00, D
Origin and Control of Ripple Formation in Beam Cutting Techniques — •Thomas Kübler1, Rudolf Friedrich1, Axel Henning2, and Günter Radons3 — 1Institut für Theoretische Physik, Universität Münster, D-48149 Münster — 2Fraunhofer Institut für Produktionstechnik und Automatisierung, D-70569 Stuttgart — 3Institut für Physik, TU Chemnitz, D-09107 Chemnitz
Beam cutting techniques, such as water jet or Laser jet cutting have many industrial applications already today. The precision of the cutting process, however, is limited by ripple formation at the cutting edge of the workpiece. To avoid these structures sub-optimal cutting velocities are used at present. Despite much work in modeling such cutting processes over the last decades, no real understanding of the origin of the striation patterns was attained. We present a new approach using concepts from nonlinear dynamics to model and control the formation of ripples. It is based on a phenomenological description by a nonlinear partial differential equation of Kuramoto-Sivashinski type, which was developed by us recently .
 R. Friedrich, G. Radons, T. Ditzinger, A. Henning; Phys. Rev. Lett. 85 (2000) 4884.