A variational phase-field model for ductile fracture depending on hydrostatic stresses
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Date
2025-08
Publication Type
Journal Article
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yes
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Abstract
We model ductile fracture for geometrically linear deformations by coupling plasticity and phase-field fracture models in a variationally consistent framework. The main aim of the proposed model is to account for the effect of stress triaxiality, in order to accurately reproduce ductile fracture, in particular, the instant and location of fracture initiation. For this purpose, we couple the modified Cam-Clay plasticity model with a phase-field fracture model. We study the behaviour of the model analytically in terms of homogeneous material responses, and numerically on plane-strain and axisymmetric specimens under tension with different notches.
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published
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Journal / series
Volume
60 (8)
Pages / Article No.
2151 - 2175
Publisher
Springer
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Subject
Phase-field; Ductile fracture; Stress triaxiality; Variational approach
Organisational unit
09697 - De Lorenzis, Laura / De Lorenzis, Laura
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Funding
219407 - Phase-field modeling of fracture and fatigue: from rigorous theory to fast predictive simulations (SNF)