The Stress-State in the Shear Zone During Steady State Machining

[+] Author and Article Information
J. H. L. Thé

Kinetics Technology International B.V., Zoetermeer, Holland

R. F. Scrutton

Patience & Nicholson Ltd., Maryborough, Victoria, Australia

J. Eng. Ind 101(2), 211-216 (May 01, 1979) (6 pages) doi:10.1115/1.3439497 History: Received July 24, 1978; Online July 15, 2010


In order to calculate the stress state at any point in the shear zone, a new method has been developed which incorporates the effects of strain—hardening, strain-rate and temperature. Previous attempts have employed a modified slip-line field technique. The method is based on an empirical formula derived from published experimental data over a period of fifteen years relating flow stress values with values of strain, strain-rate, and temperature. From an experimentally derived deformation pattern, the strain and strain-rate distributions may be determined assuming a simple shear deformation mode. By using the empirical flow stress formula, the stresses and temperatures in the plastic zone may be calculated easily. Theoretical predictions agree well with experimentally observed values. The method is applied to a parallel-sided zone.

Copyright © 1979 by ASME
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