Journal
17TH CIRP CONFERENCE ON MODELLING OF MACHINING OPERATIONS (17TH CIRP CMMO)
Volume 82, Issue -, Pages 95-100Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.procir.2019.04.156
Keywords
Digital Image Correlation (DIC); Johnson-Cook; AISI 1045; inverse identification; orthogonal cutting; material model; simulation
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An inverse identification of material parameters has the potential to increase the quality of Finite Element-simulations in metal cutting. Since basic data for the calculations are measured under the thermomechanical load in a cutting situation, extrapolation errors can be reduced. Difficulties arise from the determination of the mechanical load inside the material during chip formation. Most methods use a chip-root-analysis, which is a post-process procedure. This paper presents a newly developed inverse method, applying optical measurements analyzed with a Digital Image Correlation (DIC) technique. In this way the shear strain rate is determined at cutting speeds and load conditions significant for industrial applications. (C) 2019 The Authors. Published by Elsevier B.V.
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