Numerical and experimental investigations of Ti-6Al-4V chip generation and thermo-mechanical couplings in orthogonal cutting
Article dans une revue avec comité de lecture
Author
Date
2017Journal
International Journal of Mechanical SciencesAbstract
The chip formation mechanism of the Ti-6Al-4V remains a challenging problem in the machining process as well as its modeling and simulation. Starting from experimental observation on the titanium alloys Ti-6Al-4V machining shows that the ductile fracture in the chip formation is dominated by the shear phenomenon under high strain rate and temperature, the present work develops a new coupled behavior and damage model for better representation and understanding of the chip formation process. The behavior and damage of Ti-6Al-4V have been studied via hat-shaped specimen under temperature up to 900 °C and strain rate up to 1000 s−1. An inverse identification method based on Finite Element (FE) is established in order to determine the constitutive law’s parameters. The prediction of the segmented chip was analyzed through 3D finite element orthogonal cutting model which was validated by an in-situ and post-mortem orthogonal cutting machining observations. Finally, a particular attention is focused on the chip formation genesis which is described by three steps: Growth, Germination and Extraction.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Communication avec acteIn this paper, a fully adaptive 3D numerical methodology based on a tetrahedral element was proposed in order to rove the finite element simulation of any metal forming process. This automatic methodology was implemented ...
-
Article dans une revue avec comité de lecturePOTTIER, Thomas; MOREL, Anne; CALAMAZ, Madalina; GERMAIN, Guénaël; COUPARD, Dominique (Society for Experimental Mechanics, 2014)The present paper details a simple and effective experimental procedure dedicated to strain measurement during orthogonal cutting operations. It relies on the use of high frame-rate camera and optical microscopy. A numerical ...
-
Article dans une revue avec comité de lectureIn this work, a fully automated adaptive remeshing strategy, based on a tetrahedral element for 3D metal forming processes, was proposed in order to solve problems associated with the severe mesh distortion that occurs ...
-
Article dans une revue avec comité de lectureZOT, François; BEN-BRAHIM, Estelle; SEVERYNS, Mathieu; LEDOUX, Yann; MESNARD, Michel; CAILLÉ, Laëtitia; SWENNEN, Cécile; TEYSSÉDOU, Simon; MOUFID, Abdollah-Yassine; GERMANEAU, Arnaud; VENDEUVRE, Tanguy (Frontiers Media SA, 2023-11-21)Introduction: Lumbar disc arthroplasty is a surgical procedure designed to treat degenerative disc disease by replacing the affected disc with a mobile prosthesis. Several types of implants fall under the term total disc ...
-
Article dans une revue avec comité de lectureFor the surgical treatment of lumbar pathologies, there are essentially two medical devices that are implanted. Spinal fusion by means of a screwed plate generates a loss of intervertebral mobility, whereas a spinal dynamic ...