Plastic dislocation and incompatibility density as indicators for residual stresses

Landkammer P, Steinmann P (2019)

Publication Type: Conference contribution

Publication year: 2019

Publisher: International Center for Numerical Methods in Engineering

Pages Range: 201-210

Conference Proceedings Title: 15th International Conference on Computational Plasticity. Fundamentals and Applications, COMPLAS 2019

Event location: Barcelona ES

ISBN: 9788494919473

Abstract

Residual stresses in forming simulations are typically investigated by analyzing the remaining stress state after removing all external loadings. However, the generation of the stress state during forming remains unknown. As a remedy, we use the plastic and elastic dislocation and incompatibility densities - derived from continuum mechanical and differential geometrical considerations - as indicators to track the generation of residual stresses through out a forming operation. Theoretical backgrounds for small and large strain plasticity are highlighted and practical aspects regarding implementation are provided. Two examples demonstrate the functionality of the approach, whereby the plastic incompatibility density in phenomenological, multiplicative large strain plasticity serves as indicator.

Authors with CRIS profile

Philipp Landkammer Lehrstuhl für Technische Mechanik Paul Steinmann Lehrstuhl für Technische Mechanik

How to cite

APA:

Landkammer, P., & Steinmann, P. (2019). Plastic dislocation and incompatibility density as indicators for residual stresses. In Eugenio Onate, D. Roger J. Owen, Djordje Peric, Michele Chiumenti, Eduardo de Souza Neto (Eds.), 15th International Conference on Computational Plasticity. Fundamentals and Applications, COMPLAS 2019 (pp. 201-210). Barcelona, ES: International Center for Numerical Methods in Engineering.

MLA:

Landkammer, Philipp, and Paul Steinmann. "Plastic dislocation and incompatibility density as indicators for residual stresses." Proceedings of the 15th International Conference on Computational Plasticity. Fundamentals and Applications, COMPLAS 2019, Barcelona Ed. Eugenio Onate, D. Roger J. Owen, Djordje Peric, Michele Chiumenti, Eduardo de Souza Neto, International Center for Numerical Methods in Engineering, 2019. 201-210.

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