Implementation and application of a gradient enhanced crystal plasticity model

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)

Abstract

A rate-independent crystal plasticity model is implemented in which description of the hardening of the material is given as a function of the total dislocation density. The evolution of statistically stored dislocations (SSDs) is described using a saturating type evolution law. The evolution of geometrically necessary dislocations (GNDs) on the other hand is described using the gradient of the plastic strain tensor in a non-local manner. The gradient of the incremental plastic strain tensor is computed explicitly during an implicit FE simulation after each converged step. Using the plastic strain tensor stored as state variables at each integration point and an efficient numerical algorithm to find the gradients, the GND density is obtained. This results in a weak coupling of the equilibrium solution and the gradient enhancement. The algorithm is applied to an academic test problem which considers growth of a cylindrical void in a single crystal matrix.

Original languageEnglish
Title of host publicationProceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017
PublisherAmerican Institute of Physics
Volume1896
ISBN (Electronic)9780735415805
DOIs
Publication statusPublished - 16 Oct 2017
Event20th International ESAFORM Conference on Material Forming - City University Dublin, Dublin, Ireland
Duration: 26 Apr 201728 Apr 2017
Conference number: 20
http://www.esaform2017.com/ehome/index.php?eventid=153382&

Publication series

NameAIP conference proceedings
Number1
Volume1896

Conference

Conference20th International ESAFORM Conference on Material Forming
Abbreviated titleESAFORM 2017
CountryIreland
CityDublin
Period26/04/1728/04/17
Internet address

Fingerprint

plastic properties
gradients
plastics
tensors
crystals
hardening
voids
augmentation
single crystals
matrices
simulation

Cite this

Soyarslan, C., Perdahcioglu, E. S., Asik, E. E., Van Den Boogaard, A. H., & Bargmann, S. (2017). Implementation and application of a gradient enhanced crystal plasticity model. In Proceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017 (Vol. 1896). [160008] (AIP conference proceedings; Vol. 1896, No. 1). American Institute of Physics. https://doi.org/10.1063/1.5008183
Soyarslan, C. ; Perdahcioglu, Emin Semih ; Asik, Emin Erkan ; Van Den Boogaard, A. H. ; Bargmann, S. / Implementation and application of a gradient enhanced crystal plasticity model. Proceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017. Vol. 1896 American Institute of Physics, 2017. (AIP conference proceedings; 1).
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Soyarslan, C, Perdahcioglu, ES, Asik, EE, Van Den Boogaard, AH & Bargmann, S 2017, Implementation and application of a gradient enhanced crystal plasticity model. in Proceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017. vol. 1896, 160008, AIP conference proceedings, no. 1, vol. 1896, American Institute of Physics, 20th International ESAFORM Conference on Material Forming, Dublin, Ireland, 26/04/17. https://doi.org/10.1063/1.5008183

Implementation and application of a gradient enhanced crystal plasticity model. / Soyarslan, C.; Perdahcioglu, Emin Semih; Asik, Emin Erkan; Van Den Boogaard, A. H.; Bargmann, S.

Proceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017. Vol. 1896 American Institute of Physics, 2017. 160008 (AIP conference proceedings; Vol. 1896, No. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Soyarslan C, Perdahcioglu ES, Asik EE, Van Den Boogaard AH, Bargmann S. Implementation and application of a gradient enhanced crystal plasticity model. In Proceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017. Vol. 1896. American Institute of Physics. 2017. 160008. (AIP conference proceedings; 1). https://doi.org/10.1063/1.5008183