Počet záznamů: 1
Numerical convergence in simulations of multiaxial ratcheting with directional distortional hardening
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SYSNO ASEP 0484176 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Numerical convergence in simulations of multiaxial ratcheting with directional distortional hardening Tvůrce(i) Welling, CH.A. (US)
Marek, René (UT-L) RID
Feigenbaum, H. P. (US)
Dafalias, Y.F. (US)
Plešek, Jiří (UT-L) RID, ORCID, SAI
Hrubý, Zbyněk (UT-L) RID
Parma, Slavomír (UT-L) RID, ORCID, SAICelkový počet autorů 7 Zdroj.dok. International Journal of Solids and Structures. - : Elsevier - ISSN 0020-7683
Roč. 126, November (2017), s. 105-121Poč.str. 17 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova plasticity ; yield ; ratcheting ; yield surface distortion ; directional distortional hardening Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering CEP EF15_003/0000493 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LH14018 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy UT WOS 000412964800008 EID SCOPUS 85028335022 DOI 10.1016/j.ijsolstr.2017.07.032 Anotace In this work, we investigate the numerical convergence of a set of plasticity models with different kine- matic and directional distortional hardening rules under cyclic plastic loading. In particular, we revisit the results presented in Feigenbaum et al. (2012) in order to more robustly check for convergence during the numerical integration procedure, and show that the results presented in the previous work do not con- verge. We investigate the role of the step-size and numerical scheme on the convergence of these models when predicting ratcheting. By reducing step-sizes and using a forward Euler scheme during numerical integration, converged solutions are obtained. The new converged results lead to new conclusions. Re- sults still suggest that directional distortional hardening can improve ratcheting predictions, however the addition of directional distortional hardening yields less improvements compared to kinematic hardening alone than previously thought. This new conclusion, strongly suggests the need for additional modeling developments in order accurately predict ratcheting strains under a wide variety of cyclic plastic loadings. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2018
Počet záznamů: 1