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research-article

A Finite Element Approach To Calculate Temperatures arising During Cryogenic Turning Of Metastable Austenitic Steel AISI 347

[+] Author and Article Information
Steven Becker

Institute of Applied Mechanics
becker_s@rhrk.uni-kl.de

Hendrik Hotz

Institute for Manufacturing Technology and Production Systems
hendrik.hotz@mv.uni-kl.de

Benjamin Kirsch

Institute for Manufacturing Technology and Production Systems
benjamin.kirsch@mv.uni-kl.de

Jan C. Aurich

Institute for Manufacturing Technology and Production Systems
jan.aurich@mv.uni-kl.de

Erik von Harbou

Laboratory of Engineering Thermodynamics, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
erik.vonharbou@mv.uni-kl.de

Ralf Müller

Institute of Applied Mechanics
ram@rhrk.uni-kl.de

1Corresponding author.

ASME doi:10.1115/1.4040778 History: Received June 07, 2018; Revised June 29, 2018

Abstract

In this paper an inverse method is presented to evaluate the inner workpiece temperature distribution during cryogenic turning of metastable austenitic steel AISI 347 utilizing a FE representation of the process. Temperature data during the experiments is provided by thermocouples and a commercial thermography system. A constant cutting speed at two varying feeds are investigated. Inverse parameter verification by aligning simulated and experimental data in a least squares sense is achieved. A heat flux from tool to workpiece as well as heat transfer coefficients for forced convection by air and by carbon dioxide as cryogenic coolant are identified for each set of cutting parameters. Rigid body rotation in the model is considered applying convective time derivatives of the temperature field. Unphysical oscillations occurring in regions of high Péclet numbers are suppressed utilizing a streamline-upwind/Petrov-Galerkin scheme.

Copyright (c) 2018 by ASME
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