To develop numerical models of bulk micro-forming, the authors propose to investigate the drawing of fine wires: in fact this process is a quasi-stationary process , where tribological conditions at the die interface and the deformation field in the cross section do not change during the process. Experimentation shows a not homogeneous deformation and evident hardening in the external layers of the wire. According to it, the rheology model has been modified, using a sort of inverse analysis approach and the final numerical model shows a good agreement with the experiments, demonstrating that the proposed approach can be used to investigate material rheology in micro-forming.

Micro wire-drawing as a key for investigating models of micro forming processes

BERTI, GUIDO;MONTI, MANUEL;D'ANGELO, LUCIANO
2006

Abstract

To develop numerical models of bulk micro-forming, the authors propose to investigate the drawing of fine wires: in fact this process is a quasi-stationary process , where tribological conditions at the die interface and the deformation field in the cross section do not change during the process. Experimentation shows a not homogeneous deformation and evident hardening in the external layers of the wire. According to it, the rheology model has been modified, using a sort of inverse analysis approach and the final numerical model shows a good agreement with the experiments, demonstrating that the proposed approach can be used to investigate material rheology in micro-forming.
2006
CIRP ICME '06, 5th CIRP International Seminar on Intelligent Computation Manufacturing Engineering, Ischia, Italy, July 25-28 2006
9788895028019
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2433263
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