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

Research output: Contribution to journalArticleScientificpeer-review

11 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 languageEnglish
Pages (from-to)241-253
Number of pages13
JournalPROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B: JOURNAL OF ENGINEERING MANUFACTURE
Volume230
Issue number2
DOIs
Publication statusPublished - 1 Feb 2016
MoE publication typeA1 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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