Number of the records: 1
Numerical implementation of a model with directional distortional hardening
- 1.
SYSNO ASEP 0445966 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Numerical implementation of a model with directional distortional hardening Author(s) Marek, René (UT-L) RID
Plešek, Jiří (UT-L) RID, ORCID, SAI
Hrubý, Zbyněk (UT-L) RID
Parma, Slavomír (UT-L) RID, ORCID, SAI
Feigenbaum, H. P. (US)
Dafalias, Y.F. (US)Source Title Journal of Engineering Mechanics-Asce. - : American Society of Civil Engineers - ISSN 0733-9399
Roč. 141, č. 12 (2015), 04015048-04015048Number of pages 10 s. Publication form Print - P Language eng - English Country US - United States Keywords plasticity ; directional distortional hardening ; finite-element procedures Subject RIV JG - Metallurgy R&D Projects LH14018 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA15-20666S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 UT WOS 000365124300003 EID SCOPUS 84947754169 DOI 10.1061/(ASCE)EM.1943-7889.0000954 Annotation The presented work outlines and tests a finite-element (FE) implementation of a simple directional distortional hardening model. The evolution equations of internal variables are based on the Armstrong–Frederick evanescent memory-type hardening rule, and the associative flow rule is adopted. The directional distortion of the yield function is governed by the contraction of the backstress tensor with the so-called unit radial tensor, and incorporates a fixed scalar distortional parameter. Therefore, the variety of possible shapes of predicted subsequent yield surfaces is limited. The tangent stiffness–radial corrector method with fine subincrementation is used. This implementation is verified by comparing numerical results with analytical solutions pertinent to proportional load cases and semianalytical solutions for nonproportional loadings. The template of the whole implementation is included in the Appendix. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2016
Number of the records: 1