Evaluation of barreling and friction in uniaxial compression test: A kinematic analysis

Soheil Solhjoo*, Shahin Khoddam

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)
43 Downloads (Pure)

Abstract

Barreling compression test is an important tool for characterizing the mechanical responses of deformed material. This test also serves for studying the interfacial friction between the tool and workpiece, based on the only available method of Avitzur's “limit analysis of disc and strip forging”. This method was found to be satisfactory for low friction conditions; however, it has remained to be examined in depth. In the present work, Avitzur model is thoroughly investigated, and its applicability and limitations are discussed. Along these lines, the kinematics of Avitzur model are presented to be used in describing both the barreling parameter of the model and the profile of the deformed sample. Following an exhaustive examination on the barreling parameters of various deformed samples, one of the methods is identified to be valid for evaluating friction factor up to m ≤ 0.5. Moreover, the results clearly show that the model has its highest accuracy as long as the side-surface folding phenomenon is negligible (≤ 0.25%).

Original languageEnglish
Pages (from-to)486-493
Number of pages8
JournalInternational Journal of Mechanical Sciences
Volume156
DOIs
Publication statusPublished - 1-Jun-2019

Keywords

  • Barreling
  • Compression test
  • Friction factor
  • Heterogeneous deformation
  • Incompressibility
  • Upper bound
  • SIDE-SURFACE FOLDOVER
  • DISK

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