Modified Johnson-Cook flow stress model with thermal softening damping for finite element modeling of cutting



: Laakso SVA, Niemi E

Publisher: SAGE PUBLICATIONS LTD

: 2016

 Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture

: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE

: P I MECH ENG B-J ENG

: 230

: 2

: 241

: 253

: 13

: 0954-4054

DOI: https://doi.org/10.1177/0954405415619873


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.


Cutting, finite element modeling, Johnson-Cook flow stress model, low lead brass, thermal softening damping



Last updated on 26/11/2024 02:58:35 PM