Configurational Forces in Crystal Plasticity |
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| Authors: | Richard Lohkamp Ralf Müller Jan Aurich Frank Schneider |
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| Institution: | 1. Institute of Applied Mechanics, Department of Mechanical and Process Engineering, TU Kaiserslautern;2. Institute for Manufacturing Technology and Production Systems, Department of Mechanical and Process Engineering, TU Kaiserslautern |
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| Abstract: | The surface morphology of micro machined surfaces depends on the heterogeneous microstructure. A crystal plasticity model is used to describe the plastic deformation in cp-titanium with its hcp crystal structure. Therefore the basal and prismatic slip systems are taken into account. Furthermore, self and latent hardening are considered. The rate dependency is motivated by a visco plastic evolution law. The cutting process of cp-titanium is modeled within the concept of configurational forces for a standard dissipative media. This framework is implemented into the finite element method. An example illustrates the effects of the microstructure on plastic deformation and configurational forces. (© 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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