Andreas Schubert
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Prof. Dr. at Chemnitz University of Technology
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Andreas Schubert is an Associate Professor at Chemnitz University of Technology in Germany. His research focuses on advanced manufacturing processes, including the investigation of microstructured surfaces, tribological behavior, and simulation-assisted tool design. Recent articles highlight his expertise in methodologies for analyzing contact mechanics, surface conditioning, and the performance of various materials in machining applications.
Positions (2)
Articles (17)
Simulation-Assisted Tool Design for Pulsed Electrochemical Machining of Magnetic Shape-Memory Alloys
Shape-memory alloys set high demands on the production technologies being used. During cutting, continuous heat input and mechanical stress have an undesirable influence on the shape-memory effect. Pulsed electrochemical machining (PECM), which is based on anodic dissolution, enables force-free machining without thermomechanical influence on the edge-zone properties of the workpiece. Depending on the desired geometry, the development of a customized PECM fixture is necessary. The design of the fixtures is often based on the experiences of the designers and manufacturers, which often results in an estimation of the functionally critical dimensions. For this reason, the study focuses on a methodical approach for evaluating crucial fixture dimensions using knowledge of the specific material dissolution behavior linked with a numerical simulation model. It has been shown that the shape-memory alloy NiMnGa has a non-linear dissolution behavior in sodium nitrate. A reduction of stray currents up to 20% resulting from a lateral gap between the cathode and electrical insulation was demonstrated using numerical simulation. The study shows that a low cathode shaping height has the strongest influence on precise processing. Varying the process parameters allowed for the lateral gap to be adjusted between 0.15 and 0.25 mm.
Year:
2024
Collaborators (17)
Dirk Biermann
Technische Universität Dortmund
Udo Fritsching
Professor
University of Bremen
Jens Sölter
Head of department
University of Bremen
Thomas Grund
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Stefan Thielen
Assistant Professor for Sealing Technology / Juniorprofessur für Dichtungstechnik
Technische Universität Kaiserslautern
Matthias Meinke
Head of CFD department
RWTH Aachen University
Lizoel Buss
Leibniz-Institut für Werkstofforientierte Technologien - IWT
Thomas Junge
Chemnitz University of Technology
Markus Richter
Adjunct Full Professor
University of Western Australia
Thomas Mehner
Chemnitz University of Technology
Thomas Lampke
Chair / Professor
Chemnitz University of Technology
Sarah Johanna Hirsch
Chemnitz University of Technology
Alexander Hasse
Full Professor
TU Chemnitz
Kerstin Avila
Professor
Carl von Ossietzky Universität Oldenburg
Andreas Nestler
Chemnitz University of Technology
Wolfgang Schröder
RWTH Aachen University
Bianca Preuß
Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU

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