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RESEARCH PAPERS

Material Constitutive Modeling Under High Strain Rates and Temperatures Through Orthogonal Machining Tests

[+] Author and Article Information
S. Lei, Y. C. Shin, F. P. Incropera

School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907

J. Manuf. Sci. Eng 121(4), 577-585 (Nov 01, 1999) (9 pages) doi:10.1115/1.2833062 History: Received July 01, 1997; Revised October 01, 1998; Online January 17, 2008

Abstract

This paper presents a procedure to characterize deformation behavior applicable to various engineering materials in machining processes. Orthogonal machining tests are used to obtain the relationship between shear stress, strain, strain rate and temperature. Shear plane temperature is measured by an infrared thermal imaging system and compared with the Loewen and Shaw model. A new procedure to determine strain rate in the shear zone is proposed based on a triangular shear zone model and grain boundary determined by optical microscopy. Finally, a constitutive model for a low carbon steel, determined by the procedure, is presented and compared with existing results.

Copyright © 1999 by The American Society of Mechanical Engineers
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