Hollomon and Swift flow stress models are popularly used to describe the true stress-true strain relationship in the strain-hardening range from yielding point(yield strength) to necking point(tensile strength), each of which are defined as follows:
Hollomon : σ=K(ε)n
Swift : σ=K(ε0+ε)n
Is epsilon(ε) here true total strain or true plastic strain?
Corentin Levard
Hi,
Both of materials laws described depend on true plastic strain. Either, your model will yield way too early (in the elastic region).
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