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Open AccessArticle

Numerical Simulation and Experimental Investigation of Cold-Rolled Steel Cutting

1
Institute of Theoretical and Applied Mechanics, Silesian University of Technology, 18A Konarskiego Street, 44-100 Gliwice, Poland
2
Institute of Engineering Materials and Biomaterials, Silesian University of Technology, 18A Konarskiego Street, 44-100 Gliwice, Poland
*
Author to whom correspondence should be addressed.
Materials 2018, 11(7), 1263; https://doi.org/10.3390/ma11071263
Received: 28 May 2018 / Revised: 13 July 2018 / Accepted: 20 July 2018 / Published: 23 July 2018
(This article belongs to the Special Issue Machining—Recent Advances, Applications and Challenges)
The paper presents results of the investigations on numerical computations and experimental verification concerning the influence of selected parameters of the cutting process on the stress state in bundles of cold-rolled steel sheets being cut using a guillotine. The physical model and, corresponding to it, the mathematical model of the analysed steel sheet being cut were elaborated. In this work, the relationship between the cutting depth and the values of reduced Huber–Mises stresses as well as the mechanism of sheet separation were presented. The numerical simulations were conducted by means of the finite element method and the computer system LS-DYNA. The results of numerical computations are juxtaposed as graphs, tables, and contour maps of sheet deformation as well as reduced Huber–Mises strains and stresses for selected time instants. The microscopic tests revealed two distinct zones in the fracture areas. The ductile and brittle zones are separated at the depth of ca. 1/3 thickness of the cut steel sheet. View Full-Text
Keywords: plastic zone; fracture mechanism; steel sheet; cutting process; Huber–Mises stress; finite element method; microscopic analysis plastic zone; fracture mechanism; steel sheet; cutting process; Huber–Mises stress; finite element method; microscopic analysis
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Kaczmarczyk, J.; Grajcar, A. Numerical Simulation and Experimental Investigation of Cold-Rolled Steel Cutting. Materials 2018, 11, 1263.

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