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Conversion of compression test data into flow curve, accounting for barrelling

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journal contribution
posted on 2024-06-19, 11:08 authored by Shahin Khoddam, Peter HodgsonPeter Hodgson
Current solutions to convert the axis-symmetric compression test (ACT) data to flow data ignore the barrelling deformation in the sample. This work presents a solution for the test which accounts for the sample’s barrelling by discretising it into a finite number of layers of different radii. The solution assumes a constant and sliding friction at the anvil-sample interface. The sample’s flow behaviour is identified by combining a recent kinematic solution of the test, Prandtl–Reuss–Mises’s equations and a slab-analysis of the layers. It also involves an averaging of the effective plastic stresses developed in the individual layers. The solution is verified for a special case of no-barrelling which matches the currently used solution.

History

Journal

Computer Methods in Materials Science

Volume

21

Pagination

1-6

Location

Krakow, Poland

Open access

  • Yes

ISSN

2720-4081

eISSN

2720-3948

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Issue

3

Publisher

AGH University Press

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