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Finite Element Modeling of Void Nucleation, Growth and Coalescence for Large Plastic Strain and Complex Loading Paths

Abstract : Ductile damage prediction is still an important issue in the mechanical industry. Ductile failure criteria as well as coupled damage models were enhanced in the last decade by accounting for the influence of stress triaxiality ratio and Lode angle. For the Gurson-Tvergaard-Needleman (GTN) model, these improvements were essentially made for the growth and coalescence stages based on unit-cell models in which the behavior of a single ellipsoidal void is studied under various loading conditions. In the present work, the stage of nucleation is also addressed in addition to void growth and coalescence for large plastic strain and different particle/void morphologies.
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Submitted on : Wednesday, July 17, 2013 - 10:13:32 AM
Last modification on : Thursday, September 24, 2020 - 5:22:54 PM
Long-term archiving on: : Friday, October 18, 2013 - 4:22:36 AM

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  • HAL Id : hal-00845437, version 1

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Pierre-Olivier Bouchard, Emile Roux, Marc Bernacki. Finite Element Modeling of Void Nucleation, Growth and Coalescence for Large Plastic Strain and Complex Loading Paths. The Third International Conference on Computational Modeling of Fracture and Failure of Materials and Structures, Jun 2013, Prague, Czech Republic. pp.Page 94. ⟨hal-00845437⟩

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