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The restricted influence of kinematic hardening on shakedown loads

  • Structural design analyses are conducted with the aim of verifying the exclusion of ratcheting. To this end it is important to make a clear distinction between the shakedown range and the ratcheting range. In cyclic plasticity more sophisticated hardening models have been suggested in order to model the strain evolution observed in ratcheting experiments. The hardening models used in shakedown analysis are comparatively simple. It is shown that shakedown analysis can make quite stable predictions of admissible load ranges despite the simplicity of the underlying hardening models. A linear and a nonlinear kinematic hardening model of two-surface plasticity are compared in material shakedown analysis. Both give identical or similar shakedown ranges. Structural shakedown analyses show that the loading may have a more pronounced effect than the hardening model.

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Metadaten
Author:Manfred StaatORCiD, Michael Heitzer
DOI:https://doi.org/10.21269/62
Document Type:Conference Proceeding
Language:English
Year of Completion:2002
Publishing Institution:Fachhochschule Aachen
Date of the Publication (Server):2005/11/03
Tag:Bruchmechanik; Ratcheting; Shakedown
linear kinematic hardening; material shakedown; nonlinear kinematic hardening; ratchetting; shakedown
GND Keyword:Biomedizinische Technik; Einspielen <Werkstoff>
Source:The restricted influence of kinematic hardening on shakedown loads. Proceedings of WCCM V, 5th World Congress on Computational Mechanics, Vienna, Austria, July 7-12, 2002
Institutes:FH Aachen / Fachbereich Medizintechnik und Technomathematik
FH Aachen / IfB - Institut für Bioengineering
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik / 600 Technik, Technologie