An Explanation for the Size-Effect in Machining Using Strain Gradient Plasticity

[+] Author and Article Information
Suhas S. Joshi, Shreyes N. Melkote

George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405

J. Manuf. Sci. Eng 126(4), 679-684 (Feb 04, 2005) (6 pages) doi:10.1115/1.1688375 History: Received December 01, 2003; Online February 04, 2005
Copyright © 2004 by ASME
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Grahic Jump Location
Schematic of the parallel-sided PDZ
Grahic Jump Location
Size-effect in the specific shear energy—Tool rake angle: 0 deg
Grahic Jump Location
Size-effect in the specific shear energy—Tool rake angle: −20 deg
Grahic Jump Location
(ac) Model of strain gradient: [a] in overall PDZ, [b] in a row of elements parallel to the shear plane, [c] in a row of elements perpendicular to the shear plane
Grahic Jump Location
(ab) Slip system in single crystal dislocation model 2
Grahic Jump Location
(ac) Dislocation model for a parallel-sided PDZ in machining
Grahic Jump Location
Size-effect in the shear strength of material in the PDZ
Grahic Jump Location
Size-effect in the specific shear energy—Tool rake angle: +10 deg



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