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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11546
Title: Extension of Oxley's predictive machining theory for Johnson and Cook flow stress model
Authors: Lalwani D.I.
Mehta N.K.
Jain, P. K.
Published in: Journal of Materials Processing Technology
Abstract: This paper presents an extension of Oxley's predictive analytical model for forces, temperatures and stresses at primary (shear zone) and secondary (tool-chip interface zone) deformation zone for Johnson and Cook flow stress model. The effect of strain in addition to strain-rate and temperature at tool-chip interface, which is ignored by many researchers, is considered in the present analysis. The extension is made inline with Oxley's predictive machining theory by introducing the term neq for Johnson and Cook material flow stress model. The term neq becomes strain hardening exponent (n) for power law flow stress model used by Oxley and can be found for other material models too. Johnson and Cook flow stress model that considers the effect of strain, strain-rate, and temperature on material property is widely used nowadays in finite element method simulation and analytical modeling due to its simple form and easy to use. The extension of Oxley's theory is verified for orthogonal cutting test data from the available literature for 0.38% carbon steel [Oxley, P.L.B., 1989. The Mechanics of Machining: An Analytical Approach to Assessing Machinability. Ellis Horwood Ltd., England] and AISI 1045 steel [Ivester, R.W., Kennedy, M., Davies, M., Stevenson, R., Thiele, J., Furness, R., Athavale, S., 2000. Assessment of machining models: progress report. Machining Science and Technology 4, 511-538] and found in good agreement. © 2009 Elsevier B.V. All rights reserved.
Citation: Journal of Materials Processing Technology (2009), 209(44178): 5305-5312
URI: https://doi.org/10.1016/j.jmatprotec.2009.03.020
http://repository.iitr.ac.in/handle/123456789/11546
Issue Date: 2009
Keywords: Analytical modeling
Flow stress
Machining
Orthogonal cutting
Oxley's theory
ISSN: 9240136
Author Scopus IDs: 23479700800
7201738732
7402520507
Author Affiliations: Lalwani, D.I., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India
Mehta, N.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India
Jain, P.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India
Corresponding Author: Lalwani, D.I.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India; email: dil@med.svnit.ac.in
Appears in Collections:Journal Publications [ME]

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