An improved multiaxial stress-strain correction model for elastic FE postprocessing

Lang H, Dreßler K (2008)

Publication Language: English

Publication Type: Conference contribution, Original article

Publication year: 2008

Event location: Berlin DE

Abstract

In this paper, the model of Köttgen, Barkey and Socie, which corrects the elastic stress and strain tensor histories at notches of a metallic specimen under non-proportional loading, is improved. It can be used in connection with any multiaxial σ-ε-law of incremental plasticity. For the correction model, we introduce a constraint for the strain components that goes back to the work of Hoffmann and Seeger. Parameter identification for the improved model is performed by Automatic Differentiation and an established least squares algorithm. The results agree accurately both with transient FE computations and notch strain measurements.

Authors with CRIS profile

Holger Lang Institute of Applied Dynamics

Involved external institutions

Fraunhofer-Institut für Techno- und Wirtschaftsmathematik (ITWM) / Fraunhofer Institute for Industrial Mathematics DE Germany (DE)

How to cite

APA:

Lang, H., & Dreßler, K. (2008). An improved multiaxial stress-strain correction model for elastic FE postprocessing. In Proceedings of the 6th International Conference on Low Cycle Fatigue. Berlin, DE.

MLA:

Lang, Holger, and Klaus Dreßler. "An improved multiaxial stress-strain correction model for elastic FE postprocessing." Proceedings of the 6th International Conference on Low Cycle Fatigue, Berlin 2008.

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