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Cutting Simulation of Laser Assisted Milling of Silicon Nitride Ceramics Using PFC2D

[+] Author Affiliations
Xinwei Shen, Shuting Lei

Kansas State University, Manhattan, KS

Paper No. MSEC2009-84041, pp. 293-299; 7 pages
doi:10.1115/MSEC2009-84041
From:
  • ASME 2009 International Manufacturing Science and Engineering Conference
  • ASME 2009 International Manufacturing Science and Engineering Conference, Volume 1
  • West Lafayette, Indiana, USA, October 4–7, 2009
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-4361-1 | eISBN: 978-0-7918-3859-4
  • Copyright © 2009 by ASME

abstract

Since laser assisted milling (LAMill) exhibits complicated characteristics in ceramic machining, this paper applies a distinct-element code, PFC2D (Particle Flow Code in Two-Dimensions), to conduct cutting simulation of laser assisted slab milling and explore its machining mechanism. The microstructure of a β-type silicon nitride ceramic (β-Si3 N4 ) is modeled at grain scale. Clusters are used to simulate the rod-like grains of β-Si3 N4 . Parallel bonds are employed to represent the connection between intergranular glass phase and grains. A temperature-dependent PFC specimen is created for simulation of LAMill. A special milling cutter is designed for improving the computing efficiency. Simulation results show that the cutting force is strongly related to crack formation and propagation. The specific cutting energy decreases as the cutting temperature increases.

Copyright © 2009 by ASME

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