Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

DY: Fachverband Dynamik und Statistische Physik

DY 8: Focus Session: Nonlinear Dynamics and Stochastic Processes – Advances in Theory and Applications II

DY 8.6: Hauptvortrag

Montag, 17. März 2025, 16:45–17:15, H43

Nonlinear dynamics and time delays in metal cutting — •Andreas Otto — Fraunhofer Institute for Machine Tools and Forming Technology IWU, Reichenhainer Str. 88, 09126 Chemnitz, Germany

Since products and consequently production processes in manufacturing industry becomes more and more individual, an agile and robust process design is important for minimizing costs while guaranteeing high product quality. A fundamental understanding of the underlying physics of the manufacturing processes is essential for finding sweet spots of high productivity with optimal quality of the produced part.

In this talk, we present some examples from metal cutting, where especially the complex behavior of mechanical vibrations also known as chatter lead to undesired noise, tool wear and scraped parts. We show that mechanical vibrations at machine tools can be described by nonlinear delay differential equations and in many situations the time delay is, in addition, distributed, time-varying or state-dependent. Some recent developments for the prediction of the stability of metal cutting processes with respect to chatter vibrations and applications for online chatter detection are presented.

Keywords: Time delay systems; Nonlinear dynamics; Stability analysis; Vibrations; Chatter