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Similarity considerations on the simulation of turning processes of steels

 
: Delonnoy, L.; Hochrainer, T.; Schulze, V.; Löhe, D.; Gumbsch, P.

Zeitschrift für Metallkunde 96 (2005), Nr.7, S.761-769
ISSN: 0044-3093
ISSN: 0179-4841
Englisch
Zeitschriftenaufsatz
Fraunhofer IWM ()

Abstract
In order to investigate size effects occurring in the miniaturization of turning processes a complete dimensional analysis using a materials model for high-speed deformation was performed. The derived dimensionless similarity numbers were used to guide the parameter variation in simplified two-dimensional finite-element simulations for orthogonal cutting. The rate-depended material model leads to size effects like an increase of the specific cutting force while reducing the cutting depth. Acounter-intuitive dependence of the cutting force on cutting velocity is explained using a shear-plane model. The derived dependencies on single input parameters are used to predict output values while simultaneously changing several input parameters.

: http://publica.fraunhofer.de/dokumente/N-33854.html