Number of documents

28

Activities

Research activities :

Ductile failure of metallic materials for static and dynamic loadings

            * Ductile damage modeling
            * Localization process modeling
            * Crack appearance and propagation modeling
Keywords : Finite Element Method, eXtended Finite Element Method, Cohesive-XFEM combination, plasticity, viscoplasticity, damage

Mechanical behavior of bonded assemblies

           * Mechanical behavior characterization of joint
           * Nonlinear thermomechanical modeling
           * Numerical simulation of failure
Keywords : Finite Element Method, Cohesive elements, Cohesive-XFEM combination, Traction-Separation law, elasticity, viscoelasticity, plasticity, damage

Development of user subroutines implemented in Abaqus

* UEL (User element) to define an element
* UMAT (User Material) to define a mechanical behavior

Teaching activities :

Metallurgy (first year of higher education in engineering) : Properties of metallic materials, Crystal structure, Iron-Carbon phase diagram, heat treatments, Characterization of metallic materials

Plasticity (second year of higher education in engineering) : Plasticity, Finite element method, Yield stress, Yield Surface, Kinematic/Isotropic hardening, Abaqus

Nonlinear calculation of structures (third year of higher education in engineering) : Finite element method, Plasticity, Finite strain, Contact/Friction, Viscoelasticity, Abaqus

Simulation of plastic deformation processes (third year of higher education in engineering) : Finite element method, Plasticity, Remeshing techniques, Forging/Deep drawing/Rolling, Forge NxT

Journal articles5 documents

Konstantinos Nikolakopoulos, Jean-Philippe Crété, Patrice Longère. Progressive failure of ductile metals: Description via a three-dimensional coupled CZM-XFEM based approach. Engineering Fracture Mechanics, Elsevier, 2021, pp.107498. ⟨10.1016/j.engfracmech.2020.107498⟩. ⟨hal-03110423⟩
Konstantinos Nikolakopoulos, Jean-Philippe Crété, Patrice Longère. Volume averaging based integration method in the context of XFEM-cohesive zone model coupling. Mechanics Research Communications, Elsevier, 2020, 104, pp.103485. ⟨10.1016/j.mechrescom.2020.103485⟩. ⟨hal-02485656⟩
Johannes Wolf, Patrice Longère, Jean-Philippe Crété, Jean-Marc Cadou. Strain localization in ductile materials: Assessment of three X-FEM-based enrichment methods. Mechanics Research Communications, Elsevier, 2019, 99, pp.1-7. ⟨10.1016/j.mechrescom.2019.05.010⟩. ⟨hal-02151849⟩
Johannes Wolf, Patrice Longère, Jean-Marc Cadou, Jean-Philippe Crété. Numerical modeling of strain localization in engineering ductile materials combining cohesive models and X-FEM. International Journal of Mechanics and Materials in Design, Springer Verlag, 2018, 14 (2), pp.177-193. ⟨10.1007/s10999-017-9370-9⟩. ⟨hal-02151844⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou. Numerical modelling of crack propagation in ductile materials combining the GTN model and X-FEM. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2014, pp.204-233. ⟨10.1016/j.cma.2014.03.007⟩. ⟨hal-01113127⟩

Conference papers17 documents

Konstantinos Nikolakopoulos, Jean-Philippe Crété, Patrice Longère. Progressive failure of ductile materials: Description via a three-dimensional coupled CZM-XFEM approach. ICPDF 2020 - International Conference on Plasticity, Damage and Fracture, Jan 2020, Rivera Maya, Mexico. ⟨hal-02485680⟩
Konstantinos Nikolakopoulos, Jean-Philippe Crété, Patrice Longère. Une méthodologie couplant XFEM et CZM pour la simulation de la propagation 3D de fissures dans des métaux ductiles. CSMA2019, 14ème Colloque National en Calcul des Structures, May 2019, Presqu'île de Giens, France. ⟨hal-02152063⟩
Konstantinos Nikolakopoulos, Jean-Philippe Crété, Patrice Longère. Combination of XFEM and CZM for the numerical simulation of ductile fracture. CFRAC2019, 6th International Conference on Computational Modeling of Fracture and Failure of Materials and Structures, Jun 2019, Braunschweig, Germany. ⟨hal-02157567⟩
Jean-Philippe Crété, O. Klinkova, Tony da Silva Botelho. Revue des méthodes de simulation du comportement d'assemblages collés. 3ème Colloque sur les Assemblages mécaniques, Jul 2019, Saint-Ouen, France. ⟨hal-02533298⟩
Johannes Wolf, Konstantinos Nikolakopoulos, Patrice Longère, Jean-Philippe Crété, Jean-Marc Cadou. XFEM-CZM combination for the numerical treatment of ductile fracture. 6th. European Conference on Computational Mechanics, Jun 2018, Glasgow, United Kingdom. ⟨hal-02018617⟩
Jean-Philippe Crété, J. Wolf, Patrice Longère, J.-M. Cadou. Modélisation numérique de la rupture ductile par une approche couplant X-FEM et zone cohésive. GDR CNRS MePhy Mécanique et Physique des Systèmes Complexes - Nouveaux défis en mécanique de la rupture, Paris (France), 27-28 Nov. 2017, 2017, Paris, France. ⟨hal-02047615⟩
Patrice Longère, J. Wolf, Jean-Philippe Crété, Jean Marc Cadou. Combinaison X-FEM/CZM pour la modélisation numérique de la rupture ductile. GT MECAMAT - Physique, Mécanique et Modélisation de l'Endommagement et de la Rupture - Transition Endommagement-Rupture, Paris (France), 6 Oct. 2017, 2017, Paris, France. ⟨hal-02024372⟩
Johannes Wolf, Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou. Transition endommagement diffus vers fissuration par introduction d'une bande cohésive dans X-FEM. 13e colloque national en calcul des structures, Université Paris-Saclay, May 2017, Giens, Var, France. ⟨hal-01926880⟩
Johannes Wolf, Patrice Longère, Jean-Marc Cadou, Jean-Philippe Crété. Numerical modelling of the damage-to-fracture transition in a ductile material. 5th International Conference on Integrity-Reliability-Failure, Jul 2016, Porto, Portugal. ⟨hal-02018612⟩
Johannes Wolf, Patrice Longère, Jean-Marc Cadou, Jean-Philippe Crété. Numerical treatment of the damage/crack transition in a Gurson ductile material. 4th International Conference on Computational Modeling of Fracture and Failure of Materials and Structures, Jun 2015, Cachan, France. ⟨hal-02018620⟩
Johannes Wolf, Patrice Longère, Jean-Marc Cadou, Jean-Philippe Crété. Numerical simulation of dynamic crack propagation in ductile materials. 3rd ECCOMAS Young Investigators Conference, Jul 2015, Aachen, Germany. ⟨hal-02018618⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou, Johannes Wolf. Crack propagation in a Gurson ductile material using X-FEM. 5th. European Conference on Computational Mechanics, Sep 2014, Barcelone, Spain. ⟨hal-02018622⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou. Propagation numérique d'une fissure via X-FEM dans un matériau de Gurson. Matériaux 2014, Nov 2014, Montpellier, France. ⟨hal-02018621⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou, Michel Salaün. Propagation d'une fissure 2D dans un matériau ductile endommageable avec X-FEM. 11e colloque national en calcul des structures, CSMA, May 2013, Giens, France. ⟨hal-01717032⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou. Simulation 2D de la fissuration dans un matériau ductile endommageable avec X-FEM. 21ème Congrès Francais de Mécanique, Aug 2013, Bordeaux, France. ⟨hal-02018614⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou. Numerical simulation of crack propagation in a ductile viscoplastique material using X-FEM. International Conference on Extended Finite Element Method, Sep 2013, Lyon, France. pp.135 - 150. ⟨hal-02018624⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou. X-FEM assisted simulation of ductile damage induced 2D crack propagation. European Congress on Computational Methods in Applied Sciences and Engineering, Sep 2012, Vienne, Austria. ⟨hal-02018615⟩

Poster communications5 documents

Konstantinos Nikolakopoulos, Jean-Philippe Crété, Patrice Longère. XFEM-CZM combination for the numerical treatment of ductile fracture. Colloque National MECAMAT, Jan 2019, Aussois, France. ⟨hal-02018625⟩
Johannes Wolf, Patrice Longère, Jean-Marc Cadou, Jean-Philippe Crété. Numerical modelling of the damage-to-crack transition in a Gurson-type material. 24th International Congress of Theoretical and Applied Mechanics, Aug 2016, Montréal, Canada. ⟨hal-02018626⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou. Modélisation numérique de la réponse d’une structure navale à une explosion sous-marine. Forum Innovation DGA, Nov 2015, Palaiseau, France. ⟨hal-02018628⟩
Jean-Philippe Crété, Patrice Longère, Jean-Marc Cadou. Propagation d'une fissure 2D dans un matériau viscoplastique endommageable avec X-FEM. Colloque National MECAMAT, Jan 2013, Aussois, France. ⟨hal-02018629⟩
Jean-Philippe Crété, Charbel Moussa, Olivier Bartier, Gerard Mauvoisin. Influence des contraintes résiduelles sur les grandeurs mesurables en indentation instrumentée. Matériaux 2010, Oct 2010, Nantes, France. ⟨hal-02018630⟩

Theses1 document

Jean-Philippe Crété. Traitement numérique de la fissuration d'une structure navale. Matériaux et structures en mécanique [physics.class-ph]. Université de Bretagne Sud, 2013. Français. ⟨tel-01070096⟩