An experimental investigation of yield surfaces anisotropies

0534237 - ÚT 2021 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Štefan, Jan - Parma, Slavomír - Marek, René - Plešek, Jiří - Feigenbaum, H. P. - Ciocanel, C.
An experimental investigation of yield surfaces anisotropies.
EAN 2020 EXPERIMENTAL STRESS ANALYSIS. Ostrava: VŠB – Technical University of Ostrava, 2020 - (Fusek, M.; Cienciala, J.; Kořínek, M.; Machalla, V.; Šmach, J.), s. 529-532. ISBN 978-80-248-4451-0.
[Conference on Experimental Stress Analysis /58./. Sobotín (CZ), 19.10.2020-22.10.2020]
Grant CEP: GA ČR(CZ) GA19-03282S; GA MŠMT(CZ) LTAUSA18199
Institucionální podpora: RVO:61388998
Klíčová slova: experimental mechanics * yield surface * directional distortional hardening * metallic materials
Obor OECD: Mechanical engineering

This contribution is dedicated to a rigorous experimental procedure for evaluation of yield surfaces of common metallic materials. This yield surface tracing procedure employs thin-walled tubular specimens to identify individual yield points of the material under arbitrary combinations of axial load and torque. A yield point is identified on the basis of a prescribed threshold for the effective plastic strain that is being continuously and fully automatically evaluated throughout the test. The experimental results generated with this tracing method are promising, leading to shapes of the yield surfaces conform with the von Mises criterion. The proposed methodology can effectively capture the YS shape.
Trvalý link: http://hdl.handle.net/11104/0313117