Calibration of a distortional hardening model of plasticity

J. Plešek, Z. Hrubý, S. Parma, Heidi P Feigenbaum, Y. F. Dafalias

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Directional distortion hardening is manifested by the distortion of the shape of the yield surface such that a region of high curvature develops roughly in the direction of loading while a region of lower curvature develops in the opposite direction. Recently, several models were proposed. The simplest one studied, makes use of the Armstrong- Frederick rule, having five independent parameters. The analytical solution for uniaxial cyclic test is derived together with that for the stabilized cyclic response. The evolving shapes of the yield surfaces and their sensitivity to inputs parameters are analysed. An algorithm for material constants fitting is proposed.

Original languageEnglish (US)
Title of host publicationCivil-Comp Proceedings
PublisherCivil-Comp Press
Volume99
ISBN (Print)9781905088546
StatePublished - 2012
Event11th International Conference on Computational Structures Technology, CST 2012 - Dubrovnik, Croatia
Duration: Sep 4 2012Sep 7 2012

Other

Other11th International Conference on Computational Structures Technology, CST 2012
CountryCroatia
CityDubrovnik
Period9/4/129/7/12

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Keywords

  • Directional distortional hardening
  • Metal plasticity
  • Yield surface

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Civil and Structural Engineering
  • Artificial Intelligence
  • Environmental Engineering

Cite this

Plešek, J., Hrubý, Z., Parma, S., Feigenbaum, H. P., & Dafalias, Y. F. (2012). Calibration of a distortional hardening model of plasticity. In Civil-Comp Proceedings (Vol. 99). Civil-Comp Press.