Semantic Scholar Open Access 2008 686 sitasi

A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti–6Al–4V

M. Calamaz D. Coupard F. Girot

Lihat Sumber DOI

Abstrak

Abstract A new material constitutive law is implemented in a 2D finite element model to analyse the chip formation and shear localisation when machining titanium alloys. The numerical simulations use a commercial finite element software (FORGE 2005®) able to solve complex thermo-mechanical problems. One of the main machining characteristics of titanium alloys is to produce segmented chips for a wide range of cutting speeds and feeds. The present study assumes that the chip segmentation is only induced by adiabatic shear banding, without material failure in the primary shear zone. The new developed model takes into account the influence of strain, strain rate and temperature on the flow stress and also introduces a strain softening effect. The tool chip friction is managed by a combined Coulomb–Tresca friction law. The influence of two different strain softening levels and machining parameters on the cutting forces and chip morphology has been studied. Chip morphology, cutting and feed forces predicted by numerical simulations are compared with experimental results.

Topik & Kata Kunci

Materials Science

Penulis (3)

M. Calamaz

D. Coupard

F. Girot

Format Sitasi

APA MLA BibTeX

Calamaz, M., Coupard, D., Girot, F. (2008). A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti–6Al–4V. https://doi.org/10.1016/J.IJMACHTOOLS.2007.10.014

Akses Cepat

Lihat di Sumber doi.org/10.1016/J.IJMACHTOOLS.2007.10.014

Informasi Jurnal

Tahun Terbit: 2008
Bahasa: en
Total Sitasi: 686×
Sumber Database: Semantic Scholar
DOI: 10.1016/J.IJMACHTOOLS.2007.10.014
Akses: Open Access ✓