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Finite element modeling of residual stress profile patterns in hard turning

Published online by Cambridge University Press:  06 March 2012

Y. B. Guo  and
S. Anurag
Y. B. Guo
Affiliation:
Department of Mechanical Engineering, University of Alabama, Tuscaloosa, Alabama 35487, USA
S. Anurag
Affiliation:
Department of Mechanical Engineering, University of Alabama, Tuscaloosa, Alabama 35487, USA
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Abstract

Hard turning, i.e., turning hardened steels, may produce the unique “hook” shaped residual stress (RS) profile characterized by surface compressive RS and subsurface maximum compressive RS. However, the formation mechanism of the unique RS profile is not yet known. In this study, a novel hybrid finite element modeling approach based on thermal-mechanical coupling and internal state variable plasticity model has been developed to predict the unique RS profile patterns by hard turning AISI 52100 steel (62 HRc). The most important controlling factor for the unique characteristics of residual stress profiles has been identified. The transition of maximum residual stress at the surface to the subsurface has been recovered by controlling the plowed depth. The predicted characteristics of residual stress profiles favorably agree with the measured ones. In addition, friction coefficient only affects the magnitude of surface residual stress but not the basic shape of residual stress profiles.

Keywords

residual stresshard turningmodelingfinite element analysis
Type
Methods For Residual Stress Analysis
Information
Powder Diffraction , Volume 24 , Supplement S1 , June 2009 , pp. S22 - S25
Copyright
Copyright © Cambridge University Press 2009

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