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REPRESENTATION OF CYCLIC PROPERTIES AND HYSTERESIS ENERGY IN α‐BRASS USING A CERTAIN CLASS OF ELASTIC‐PLASTIC MODELS
Author(s) -
Kaleta J.,
Ziętek G.
Publication year - 1994
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1994.tb00821.x
Subject(s) - hysteresis , brass , materials science , representation (politics) , elastic energy , tension (geology) , compression (physics) , loop (graph theory) , phase (matter) , amplitude , energy (signal processing) , structural engineering , composite material , mathematics , physics , metallurgy , thermodynamics , condensed matter physics , engineering , optics , statistics , combinatorics , quantum mechanics , copper , politics , political science , law
— The paper deals with the analytical representation of the cyclic stressstrain curve, the hysteresis loop and the hysteresis energy for a single‐phase α‐brass. The one‐ and two‐parameter elastic‐plastic models that were used were so chosen as to produce compatible representation of both the stress‐strain relationship and the hysteresis loop. The models were checked with experimental data. The specimens were tested in uniaxial tension‐compression ( R ε =−1) under total strain amplitude control. The experiments covered a broad spectrum of lives from the low‐cycle region through to the high‐cycle regime, i.e. up to lives of N = 1 × 10 6 cycles. The adopted measurement method enabled the cyclic deformation curve, hysteresis loop and hysteresis energy to be determined independently. It was shown that the modifed Ramberg‐Osgood model is a good approximation to actual cyclic behaviour of α‐brass.