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

Sampsa Vili Antero Laakso; Esko Niemi

doi:10.1177/0954405415619873

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

Sampsa Vili Antero Laakso^*, Esko Niemi

^*Corresponding author for this work

Department of Mechanical Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

20 Citations (Scopus)

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.

Original language	English
Pages (from-to)	241-253
Number of pages	13
Journal	PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B: JOURNAL OF ENGINEERING MANUFACTURE
Volume	230
Issue number	2
DOIs	https://doi.org/10.1177/0954405415619873
Publication status	Published - 1 Feb 2016
MoE publication type	A1 Journal article-refereed

Keywords

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

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10.1177/0954405415619873

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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.",

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Modified Johnson-Cook flow stress model with thermal softening damping for finite element modeling of cutting. / Laakso, Sampsa Vili Antero; Niemi, Esko.

In: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B: JOURNAL OF ENGINEERING MANUFACTURE, Vol. 230, No. 2, 01.02.2016, p. 241-253.

Research output: Contribution to journal › Article › Scientific › peer-review

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KW - Johnson-Cook flow stress model

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KW - low lead brass

KW - BRASS

KW - BEHAVIOR

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

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