Modelling of dynamic strain aging with a dislocation based isotropic hardening model and investigation of orthogonal loading

B. Berisha, P. Hora, L. Tong, A. Wahlen, Antonius H. van den Boogaard

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Abstract

Based on experimental results, a dislocation material model describing the dynamic strain aging effect at different temperatures is presented. One and two stage loading tests were performed in order to investigate the influence of the loading direction as well as the temperature influence due to the hardening mechanism. Bergström’s theory of work hardening was used as a basis for the model development regarding the thermal isotropic behavior as well as the Chaboche model to describe the kinematic hardening. Both models were implemented in an in-house FE-Code in order to simulate the real processes. The present paper discusses two hardening mechanisms, where the first part deals with the pure isotropic hardening including dynamic strain aging and the second part involves the influence of the loading direction regarding combined (isotropic and kinematic) hardening behavior.
Original languageUndefined
Title of host publicationThe 9th International Conference on Technology of Plasticity
EditorsD.Y. Yang
Place of Publicationplaats ............
PublisherICTP
Pages339-344
Number of pages6
ISBN (Print)978-89-5708-152-5
Publication statusPublished - 2009
Event9th International Conference Technology of Plasticity, ICTP 2008 - Gyeongju, Korea, Republic of
Duration: 7 Sep 200811 Sep 2008
Conference number: 9

Conference

Conference9th International Conference Technology of Plasticity, ICTP 2008
Abbreviated titleICTP
CountryKorea, Republic of
CityGyeongju
Period7/09/0811/09/08

Keywords

  • IR-59703
  • METIS-255609

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