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ARTICLE
Experimental identification of CP-Cu yield surface and its evolution due to complex loading pre-deformation
1
Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw, Poland
Submission date: 2025-01-26
Final revision date: 2025-02-20
Acceptance date: 2025-03-10
Online publication date: 2025-07-07
Corresponding author
Mateusz Kopec
Department of Experimental Mechanics, Institute of Fundamental Technological Research Polish Academy of Sciences, 5B Pawinskiego St., 02-106, Warsaw, Poland
Department of Experimental Mechanics, Institute of Fundamental Technological Research Polish Academy of Sciences, 5B Pawinskiego St., 02-106, Warsaw, Poland
KEYWORDS
TOPICS
ABSTRACT
This study examines the yield surface evolution of technical copper (CP-Cu) under complex loading, focusing on monotonic tension and combined tension with cyclic torsion. Using biaxial testing, initial and pre-deformed yield surfaces were analysed. Results indicate kinematic hardening with tensile pre-strain, while cyclic torsion induces anisotropic hardening at lower amplitudes (±0.1 %) and softening at higher amplitudes (±0.2 %). Strain amplitude significantly impacts material response, while frequency has a minor effect.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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