Název: Development of autonomous experimental setup to investigate directional distortional hardening under biaxial loading
Autoři: Svárovský, Jiří ; Parma, Slavomír ; Štefan, Jan ; Ciocanel, C. ; Feigenbaum, H. P. ; Klepač, Vilém ; Marek, René ; Plešek, Jiří
Typ dokumentu: Příspěvky z konference
Konference/Akce: Computational Mechanics 2021 /36./, Srní (CZ), 20211108
Rok: 2021
Jazyk: eng
Abstrakt: Plastic deformations alter the shape of the yield surface in the stress space. Models for predicting the shape of the yield surface according to the direction of loading are being developed. Experimental data are the key factor in development and validation of phenomenological models, such as the model of directional distortional hardening cited in this study. The objective of this paper is to present the experimental setup for investigation of the directional distortional hardening. A new autonomous method was developed using an axial-torsional testing machine and the Labivew 2017 graphical programming environment to monitor the yield surface in axial stress – shear stress space. A suitable yield condition in form of effective plastic strain was used for the determination of the yield points. Initial yield surface obtained by this method shows promising agreement with von Mises model of the yield surface. Several outstanding yield points were measured which disrupt the assumption of the yield surface convexity. Therefore, possible shortcomings caused by the methodology are being investigated.
Klíčová slova: directional distortional hardening; Labview; strain hardening; yield surface
Číslo projektu: EF15_003/0000493, LTAUSA18199, GA19-03282S (CEP)
Poskytovatel projektu: GA MŠk, GA MŠk, GA ČR
Zdrojový dokument: Computational mechanics 2021. Proceedings of computational mechanics 2021, ISBN 978-80-261-1059-0
Poznámka: Související webová stránka: https://www.kme.zcu.cz/compmech/info_sborniky.php

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0327203

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-508408


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Věda a výzkum > AV ČR > Ústav termomechaniky
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