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Numerical Investigation of Two-Dimensional Thermally Assisted Ductile Regime Milling of Brittle Materials

[+] Author Affiliations
Jianfeng Ma, Xianchen Ge

Saint Louis University, Saint Louis, MO

Shuting Lei

Kansas State University, Manhattan, KS

Paper No. MSEC2014-4191, pp. V002T02A101; 8 pages
doi:10.1115/MSEC2014-4191
From:
  • ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference
  • Volume 2: Processing
  • Detroit, Michigan, USA, June 9–13, 2014
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-4581-3
  • Copyright © 2014 by ASME

abstract

This study investigates the effects of different variables (preheating temperature, edge radius, and rake angle) on ductile regime milling of a bioceramic material known as nanohydroxyapatite (nano-HAP) using numerical simulation. AdvantEdge FEM Version 6.1 is used to conduct the simulation of 2D milling mimicked by orthogonal machining with varying uncut chip thickness. Thermal boundary conditions are specified to approximate laser preheating of the work material. Based on the pressure-based criterion for ductile regime machining, the dependence of critical depth of cut on cutting conditions is investigated using Tecplot 360. It is found that as uncut chip thickness decreases, the critical depth of cut decreases. In addition, the critical depth of cut increases as the negativity of rake angle and/or preheating temperature increase.

Copyright © 2014 by ASME
Topics: Brittleness , Milling

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