A1 Refereed original research article in a scientific journal
Modified Johnson-Cook flow stress model with thermal softening damping for finite element modeling of cutting
Authors: Laakso SVA, Niemi E
Publisher: SAGE PUBLICATIONS LTD
Publication year: 2016
Journal: Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
Journal name in source: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
Journal acronym: P I MECH ENG B-J ENG
Volume: 230
Issue: 2
First page : 241
Last page: 253
Number of pages: 13
ISSN: 0954-4054
DOI: https://doi.org/10.1177/0954405415619873
Abstract
Results of materials testing for lead-free brass show that the effect of thermal softening decreases significantly when the strain rate is high. This behavior is referred to as thermal softening damping. In this article, a flow stress model with thermal softening damping based on the Johnson-Cook flow stress model was developed. Finite element simulations with the proposed model are compared to cutting experiments to estimate the effect of damping in metal cutting.
Results of materials testing for lead-free brass show that the effect of thermal softening decreases significantly when the strain rate is high. This behavior is referred to as thermal softening damping. In this article, a flow stress model with thermal softening damping based on the Johnson-Cook flow stress model was developed. Finite element simulations with the proposed model are compared to cutting experiments to estimate the effect of damping in metal cutting.
Keywords:
Cutting, finite element modeling, Johnson-Cook flow stress model, low lead brass, thermal softening damping
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