An improved Lagrange-based numerical model for machining Ti-6Al-4V alloy concerning tool cutting edge microgeometry

Current Lagrange-based machining models usually involve a sacrificial layer (LAG-SL) to facilitate the chip formation. Otherwise, severe element distortion error arises especially when tool cutting edge microgeometry is considered. In view of this limitation, an improved Lagrange-based machining mod...

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Bibliographic Details
Published inProcedia CIRP Vol. 126; pp. 469 - 474
Main Authors Hu, Cheng, Zhuang, Kejia, Birembaux, Hélène, Outeiro, José
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2024
Subjects
Finite-elemen method
Lagrange formulation
Residual stress
Sacrificial layer
Tool cutting edge
Tool cutting edge
Lagrange formulation
Finite-elemen method
Residual stress
Sacrificial layer
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ISSN2212-8271
2212-8271
DOI10.1016/j.procir.2024.08.403

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Summary:Current Lagrange-based machining models usually involve a sacrificial layer (LAG-SL) to facilitate the chip formation. Otherwise, severe element distortion error arises especially when tool cutting edge microgeometry is considered. In view of this limitation, an improved Lagrange-based machining model is proposed that acquires no sacrificial layer (LAG-nSL) and can simulate completely the cutting, unloading and cooling process. Through comparisons with plenty of experimental measurements, the presented model is found not only applicable for machining using tool with various edge radii, but also yields better outcomes of chip morphologies, forces and residual stress distribution.
ISSN:2212-8271
2212-8271
DOI:10.1016/j.procir.2024.08.403