On the ratcheting of the VT6 alloy in a range of loading scenarios

A. A. Kaygorodtseva, V. I. Kapustin, K. V. Zakharchenko, A. V. Shutov

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


A set of experimental results concerning the accumulation of inelastic strain in the VT6 titanium alloy is presented. The considered tests include cyclic stress-controlled loading with monotonically increasing stress amplitude and constant mean stress. The focus of the study is on the accurate phenomenological modelling of the complex material behaviour. Four different material models are employed to capture the phenomena of ratcheting and nonlinear kinematic hardening. Two models are of the Armstrong-Frederick type and the remaining two models are of the Ohno-Wang type. Since all the considered models contain a big number of material parameters, a sophisticated nested procedure is used for the parameter identification; the obtained material parameters are validated by additional experiments. It is shown that all the models yield nearly the same accuracy; the limitations of the phenomenological approach are highlighted and discussed.

Original languageEnglish
Article number012020
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 20 Nov 2020
Event9th International Conference on Lavrentyev Readings on Mathematics, Mechanics and Physics - Novosibirsk, Russian Federation
Duration: 7 Sep 202011 Sep 2020


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