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Multiscale modelling and simulation of micro machining of titanium
Author(s) -
Lohkamp Richard,
Müller Ralf,
Schneider Frank,
Aurich Jan
Publication year - 2012
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201210145
Subject(s) - microscale chemistry , materials science , isotropy , machining , microstructure , finite element method , hardening (computing) , crystal plasticity , plasticity , titanium , deformation (meteorology) , crystal (programming language) , titanium alloy , composite material , metallurgy , structural engineering , computer science , physics , mathematics , engineering , optics , mathematics education , alloy , layer (electronics) , programming language
The microscale morphology of micro machined component surfaces is directly connected to the heterogeneous microstructure. The deformation depends on the crystal structure, in case of the considered cp‐titanium, the hcp crystal structure. In a first approach the crystal plastic deformation is modeled with isotropic hardening. A visco‐plastic evolution law accounts for the rate dependency. The concept of configurational forces is used with the framework of crystal plasticity to model the cutting process of cp‐titanium. The setting is implemented into the finite element method. The examples show the effect of the material heterogeneity on the deforamtion behavior and on the related configurational forces. (© 2012 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)