Strain-Hardening and Thermal-Softening Effects on Shear Angle Prediction: New Model Development and Validation

[+] Author and Article Information
Xueshu Song

College of Engineering and Engineering Technology, Northern Illinois University, DeKalb, IL 60115

J. Eng. Mater. Technol 117(1), 28-32 (Jan 01, 1995) (5 pages) doi:10.1115/1.2804368 History: Received December 01, 1992; Revised September 20, 1993; Online November 27, 2007


The strain-hardening and thermal-softening effects on shear stress and shear angle in orthogonal machining are discussed in this paper. The temperature effect on strain hardening was quantitatively related to the shear angle using Merchant’s upper bound condition to reduce the number of experimentally-obtained coefficients and thus to both reduce cost and increase accuracy in share angle prediction. This quantitative relationship was then integrated with a force based process model and an equal energy type approach in developing a new model. A statistical analysis with experiment data indicated that the new model yielded improved result in accuracy, reliability, insensitivity to nonmodel parameters, and adaptability.

Copyright © 1995 by The American Society of Mechanical Engineers
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