Influence of Different Material Models on the Result of Numerical High Speed Cutting Simulations

Halle, T.; Meyer, L. W.

Influence of Different Material Models on the Result of Numerical High Speed Cutting Simulations

dc.contributor.author	Halle, T.	de
dc.contributor.author	Meyer, L. W.	de
dc.date.accessioned	2010-04-08T08:37:12Z
dc.date.available	2010-04-08T08:37:12Z
dc.date.issued	2004	de
dc.description.abstract	Extreme conditions for the workpiece and the tool can occur in high speed cutting processes. Temperatures above 1000 °C at very high strains over 3 and strain rates near 105 1/s are not unusual. In the first part of this paper an overview about the well known and new developed testing methods for these extreme conditions is given. For numerical simulations it is necessary to formulate closed material models which include strain, strain rate, and the temperature. In the second part some well known material models are presented and compared. Furthermore, advantages and disadvantages are named. The flow stress behaviour of two types of steel (1.1191, 1.2311) as a function of strain rate and temperature is presented. A Johnson-Cook and a Zerilli-Armstrong model is used for the comparative numerical simulations of an orthogonal cutting process. To indicate the process of chip segmentation, a damage model is often used. The influence of various damage models with different damage parameters and failure modes is shown. The calculated cutting forces and the shape of the chips are compared with results determined at a quickstop cutting device with integrated force measurement. Additionally, the calculated chip formation is compared with the measured shape by means of highspeed photography. The temperatures, forces, and chip shape for both used models are presented and the influence of different material models are evaluated and named.	en
dc.identifier.uri	http://hdl.handle.net/2003/27044
dc.identifier.uri	http://dx.doi.org/10.17877/DE290R-12975
dc.language.iso	en	de
dc.publisher	Institut für Umformtechnik - Technische Universität Dortmund	de
dc.relation.ispartof	1st International Conference on High Speed Forming, March 31, April 1, 2004, Dortmund, Germany	de
dc.subject	material	en
dc.subject	modelling	en
dc.subject	simulation	en
dc.subject.ddc	620	de
dc.subject.ddc	670	de
dc.title	Influence of Different Material Models on the Result of Numerical High Speed Cutting Simulations	en
dc.type	Text	de
dc.type.publicationtype	conferenceObject	de
dcterms.accessRights	open access

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