The MFrontGenericInterfaceSupport project

Helfer, Thomas; Bleyer, Jérémy; Frondelius, Tero; Yashchuk, Ivan; Nagel, Thomas; Naumov, Dmitri

doi:10.21105/joss.02003

Cited by 19 publications

(11 citation statements)

References 21 publications

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“…In our implementation, all variables are initialized with the converged values of the previous load step, except the conic variables (x, s). Indeed, in order to have a starting point located far from the feasible region boundary, the initial value for the next load step is taken as follows: The present implementation results have been compared with computations using the commercial finite-element software Abaqus [39] and also using the open-source finiteelement platform FEniCS [40][41][42] coupled with MFront [43] for the constitutive behaviour integration.…”

Section: Initialization Points Of the Ipmmentioning

confidence: 99%

“…The FEniCS/MFront implementation consists in a total-Lagrangian implementation of logarithmic plasticity using a standard Newton-Raphson/return mapping procedure. The [43].…”

Section: Initialization Points Of the Ipmmentioning

confidence: 99%

“…The present implementation results have been compared with computations using the commercial finite‐element software Abaqus 40 and also using the open‐source finite‐element platform FEniCS 41‐43 coupled with MFront 44 for the constitutive behaviour integration.…”

Section: Illustrative Applicationsmentioning

confidence: 99%

“…The FEniCS/MFront implementation consists in a total‐Lagrangian implementation of logarithmic plasticity using a standard Newton‐Raphson/return mapping procedure. The coupling between both libraries relies on the MFrontGenericInterfaceSupport project 44 …”

Section: Illustrative Applicationsmentioning

confidence: 99%

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Extending interior‐point methods to nonlinear second‐order cone programming: Application to finite‐strain elastoplasticity

Boustani

Bleyer

Arquier³

et al. 2020

Numerical Meth Engineering

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Interior-point methods are well suited for solving convex non-smooth optimization problems which arise for instance in problems involving plasticity or contact conditions. This work attempts at extending their field of application to optimization problems involving either smooth but non-convex or non-smooth but convex objectives or constraints. A typical application for such kind of problems is finite-strain elastoplasticity which we address using a total Lagrangian formulation based on logarithmic strain measures. The proposed interior-point algorithm is implemented and tested on 3D examples involving plastic collapse and geometrical changes. Comparison with classical Newton-Raphson/return mapping methods shows that the interior-point method exhibits good computational performance, especially in terms of convergence robustness. Similarly to what is observed for convex small-strain plasticity, the interior-point method is able to converge for much larger load steps than classical methods.

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Section: Initialization Points Of the Ipmmentioning

confidence: 99%

“…The FEniCS/MFront implementation consists in a total-Lagrangian implementation of logarithmic plasticity using a standard Newton-Raphson/return mapping procedure. The [43].…”

Section: Initialization Points Of the Ipmmentioning

confidence: 99%

Section: Illustrative Applicationsmentioning

confidence: 99%

Section: Illustrative Applicationsmentioning

confidence: 99%

See 2 more Smart Citations

Extending interior‐point methods to nonlinear second‐order cone programming: Application to finite‐strain elastoplasticity

Boustani

Bleyer

Arquier³

et al. 2020

Numerical Meth Engineering

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“…The aim of this paper is to implement a law of elastoplastic behaviour of CHABOCHE in the finite element analysis software Cast3M, via the UMAT computer interface. We will use the Mfront tool developed by Helfer [13]. Finally, the implemented behaviour law will be validated on simple geometries to ensure its conformity.…”

Section: Introductionmentioning

confidence: 99%

Implantation by an implicit approach of an elastoplastic behaviour law in the finite element cast3m code

Fokam¹,

Kanko²,

Djomi³

et al. 2022

Revue Africaine De Recherche en Informatique Et Mathématiques Appliquées

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soumission à Episciences This paper is dedicated to the implementation of a law of mechanical behavior in the finite element software Cast3M using an open source code generator named Mfront. To do so, an elastoplastic behaviour model has been chosen from existing laws in the literature. Following an implicit discretization, a hardware library corresponding to the isotropic and kinematic strain-hardening model is generated using Mfront. The UMAT computer interface is used to build the library in Cast3M. A validation of the approach has been carried out by comparing the numerical results obtained with the generated hardware library and the equivalent pre-existing library in Cast3M. Simulations in the case of a tensile bar and a perforated plate show almost identical results Ce papier est dédié à l’implantation d’une loi de comportement mécanique dans le logiciel éléments finis Cast3M à l’aide d’un générateur de code open source nommé Mfront. Pour ce faire, un modèle de comportement élasto-plastique a été choisi à partir des lois existantes dans la littérature. Suivant une discrétisation implicite, une bibliothèque matérielle correspondant au modèle de CHABOCHE à écrouissage isotrope et cinématique non linéaire est générée grâce à Mfront. L’interface informatique UMAT est utilisée pour construire la bibliothèque dans Cast3M. Une validation de l’approche a été menée en comparant les résultats numériques obtenus entre la bibliothèque matérielle générée et la bibliothèque équivalente préexistante dans Cast3M. Les simulations dans le cas d’une barre en traction et une plaque trouée montrent des résultats quasi identiques

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Hierarchical modelling in benchmarking, analysis and code development for coupled geo‐processes

Nagel,

Buchwald,

Kiszkurno

et al. 2024

Proc Appl Math and Mech

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Geotechnical safety analysis relies on numerical simulations capturing interacting physical phenomena. Systematic model development and selection are vital for interpretable results without black‐box aspects. Interpretability implies that models can be checked for plausibility and consistency as a whole and in terms of individual components by the handling engineers. This contribution discusses the following three related aspects: (1) confidence‐building through embedding process models in a complexity hierarchy that ensures physical consistency among its members and provides an avenue for software testing and confidence building; (2) combining probabilistic engineering analyses with such model hierarchies to allow selection of the most appropriate process model given a set of experimental data while avoiding overfitting and (3) separating distinct model aspects both technically and logically for reproducibility, efficiency and quality assurance of simulation software. The latter aspect is illustrated based on the example of a material model database that can be linked to different process codes.

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The MFrontGenericInterfaceSupport project

Cited by 19 publications

References 21 publications

Extending interior‐point methods to nonlinear second‐order cone programming: Application to finite‐strain elastoplasticity

Extending interior‐point methods to nonlinear second‐order cone programming: Application to finite‐strain elastoplasticity

Implantation by an implicit approach of an elastoplastic behaviour law in the finite element cast3m code

Hierarchical modelling in benchmarking, analysis and code development for coupled geo‐processes

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