Articles de journaux
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Tognevi Amen; Guerich Mohamed; Yvonnet Julien A multi-scale modeling method for heterogeneous structures without scale separation using a filter-based homogenization scheme Article de journal International Journal for Numerical Methods in Engineering, p. n/a–n/a, 2016, ISSN: 1097-0207. Résumé | Liens | BibTeX @article{NME:NME5200,
title = {A multi-scale modeling method for heterogeneous structures without scale separation using a filter-based homogenization scheme},
author = {Tognevi Amen and Guerich Mohamed and Yvonnet Julien},
url = {http://dx.doi.org/10.1002/nme.5200},
doi = {10.1002/nme.5200},
issn = {1097-0207},
year = {2016},
date = {2016-01-01},
journal = {International Journal for Numerical Methods in Engineering},
pages = {n/a--n/a},
abstract = {A method is proposed to compute the response of highly heterogeneous structures by constructing homogenized models when no scale separation can be assumed. The technique is based on an extended homogenization scheme where the averaging operators are replaced by linear filters to cut off fine scale fluctuations, while maintaining locally varying mechanical fields with larger wavelength. As a result, the constitutive law at an intermediate scale, called mesoscale, arises to be naturally nonlocal by construction, where the kernel operator is fully constructed by computations on the unit cell associated with the microstructure. A displacement-based numerical strategy is developed to implement the technique in a classical finite element framework and does not require higher-order elements. The methodology is applied to construct simplified models of heterogeneous structures subjected to loads, which have a characteristic wavelength comparable with the dimensions of the heterogeneities or in presence of strong strain localization as in cracked heterogeneous structures. Copyright © 2016 John Wiley & Sons, Ltd.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A method is proposed to compute the response of highly heterogeneous structures by constructing homogenized models when no scale separation can be assumed. The technique is based on an extended homogenization scheme where the averaging operators are replaced by linear filters to cut off fine scale fluctuations, while maintaining locally varying mechanical fields with larger wavelength. As a result, the constitutive law at an intermediate scale, called mesoscale, arises to be naturally nonlocal by construction, where the kernel operator is fully constructed by computations on the unit cell associated with the microstructure. A displacement-based numerical strategy is developed to implement the technique in a classical finite element framework and does not require higher-order elements. The methodology is applied to construct simplified models of heterogeneous structures subjected to loads, which have a characteristic wavelength comparable with the dimensions of the heterogeneities or in presence of strong strain localization as in cracked heterogeneous structures. Copyright © 2016 John Wiley & Sons, Ltd. |
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet Determining the Size of RVE for Nonlinear Random Composites in an Incremental Computational Homogenization Framework Article de journal Journal of Engineering Mechanics, 142 (5), p. 04016018, 2016. Liens | BibTeX @article{doi:10.1061/(ASCE)EM.1943-7889.0001057,
title = {Determining the Size of RVE for Nonlinear Random Composites in an Incremental Computational Homogenization Framework},
author = {Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
url = {http://dx.doi.org/10.1061/(ASCE)EM.1943-7889.0001057},
doi = {10.1061/(ASCE)EM.1943-7889.0001057},
year = {2016},
date = {2016-01-01},
journal = {Journal of Engineering Mechanics},
volume = {142},
number = {5},
pages = {04016018},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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Mohamed Guerich; Samir Assaf Optimization of Noise Transmission through Damped Sandwich Structures Article de journal Journal of Vibration and Acoustics, 135 (5), p. 1-13, 2013. Résumé | Liens | BibTeX @article{GUERICH2013,
title = {Optimization of Noise Transmission through Damped Sandwich Structures},
author = { Mohamed Guerich and Samir Assaf},
url = {http://www.researchgate.net/publication/262456008_Optimization_of_Noise_Transmission_through_Damped_Sandwich_Structures},
year = {2013},
date = {2013-10-01},
journal = {Journal of Vibration and Acoustics},
volume = {135},
number = {5},
pages = {1-13},
abstract = {An optimization methodology to increase the noise transmission loss (TL) of damped sandwich structures is presented. The prediction of the TL uses a numerical tool based on a finite element formulation for the sandwich plate coupled to a boundary element method for the acoustic medium. This tool can be used for arbitrarily shaped three-layer sandwich plates with various boundary conditions and it is well adapted to parametric and optimization studies. First, a parametric study was conducted to choose the objective function, the constraints, and the pertinent design variables to use in the optimization problem which consist in reducing the sound power transmitted by a viscoelastically damped sandwich plate. Next, by constraining the acoustical behavior of the sandwich panel, the surface mass of the sandwich structure was minimized. It is shown that a significant reduction in the transmitted sound power can be achieved by selecting the appropriate geometric configuration and damping layer material.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
An optimization methodology to increase the noise transmission loss (TL) of damped sandwich structures is presented. The prediction of the TL uses a numerical tool based on a finite element formulation for the sandwich plate coupled to a boundary element method for the acoustic medium. This tool can be used for arbitrarily shaped three-layer sandwich plates with various boundary conditions and it is well adapted to parametric and optimization studies. First, a parametric study was conducted to choose the objective function, the constraints, and the pertinent design variables to use in the optimization problem which consist in reducing the sound power transmitted by a viscoelastically damped sandwich plate. Next, by constraining the acoustical behavior of the sandwich panel, the surface mass of the sandwich structure was minimized. It is shown that a significant reduction in the transmitted sound power can be achieved by selecting the appropriate geometric configuration and damping layer material. |
Samir Assaf; Mohamed Guerich; Philippe Cuvelier Vibration and Damping Analysis of Plates with Partially Covered damping Layers Article de journal Acta Acustica United with Acustica, 97 , p. 553-568, 2011. Résumé | Liens | BibTeX @article{ASSAF2011,
title = {Vibration and Damping Analysis of Plates with Partially Covered damping Layers},
author = { Samir Assaf and Mohamed Guerich and Philippe Cuvelier},
editor = {S. Hirzel Verlag},
url = {http://dx.doi.org/10.3813/AAA.918436},
year = {2011},
date = {2011-07-01},
journal = {Acta Acustica United with Acustica},
volume = {97},
pages = {553-568},
abstract = {The constrained-layer damping treatment is widely used to control the resonant response of vibrating structures, particularly in the automotive and aerospace industries. This technique requires design tools in order to select the best location, type and thickness of the damping and constraining-layer materials for optimum damping while minimizing the total weight of the damping treatments. In this study, a numerical tool is presented to analyze the vibration response of plates partially or fully covered with a constrained viscoelastic damping material. This tool is based on a finite element approach. The undamped plate structure is modeled using a discrete Kirchhoff theory (DKT) element. However, a sandwich plate element is specially derived to model the damped plate structure. This element is formulated in such a way that it is compatible with the DKT element. The natural frequencies and modal loss factors are derived from the modal strain energy method. The proposed approach is validated by comparing predictions with the results of various examples published in the literature. Hence, this approach is shown to predict accurately the damping characteristics of arbitrarily shaped sandwich plates, with different material properties and boundary conditions, fully or partially covered with constrained viscoelastic layers. The influence of the damping patch locations and the viscoelastic material's shear modulus on the vibration and damping characteristics is investigated. To damp the plate effectively using partial coverage, the damping patches must be distributed appropriately. To select the best damping patch locations, an indicator based on the energy dissipated through the viscoelastic layer is proposed.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The constrained-layer damping treatment is widely used to control the resonant response of vibrating structures, particularly in the automotive and aerospace industries. This technique requires design tools in order to select the best location, type and thickness of the damping and constraining-layer materials for optimum damping while minimizing the total weight of the damping treatments. In this study, a numerical tool is presented to analyze the vibration response of plates partially or fully covered with a constrained viscoelastic damping material. This tool is based on a finite element approach. The undamped plate structure is modeled using a discrete Kirchhoff theory (DKT) element. However, a sandwich plate element is specially derived to model the damped plate structure. This element is formulated in such a way that it is compatible with the DKT element. The natural frequencies and modal loss factors are derived from the modal strain energy method. The proposed approach is validated by comparing predictions with the results of various examples published in the literature. Hence, this approach is shown to predict accurately the damping characteristics of arbitrarily shaped sandwich plates, with different material properties and boundary conditions, fully or partially covered with constrained viscoelastic layers. The influence of the damping patch locations and the viscoelastic material's shear modulus on the vibration and damping characteristics is investigated. To damp the plate effectively using partial coverage, the damping patches must be distributed appropriately. To select the best damping patch locations, an indicator based on the energy dissipated through the viscoelastic layer is proposed. |
Samir Assaf; Mohamed Guerich; Philippe Cuvelier Vibration and Acoustic Response of Damped Sandwich Plates Immersed in a light or heavy fluid Article de journal Computers and Structures, 88 , p. 870-878, 2010. Résumé | Liens | BibTeX @article{ASSAF2010,
title = {Vibration and Acoustic Response of Damped Sandwich Plates Immersed in a light or heavy fluid},
author = { Samir Assaf and Mohamed Guerich and Philippe Cuvelier},
url = {http://www.sciencedirect.com/science/article/pii/S0045794910000805},
year = {2010},
date = {2010-07-01},
journal = {Computers and Structures},
volume = {88},
pages = {870-878},
abstract = {This paper presents a finite element formulation to analyze the vibro-acoustic response of plates with constrained-layer damping treatment. This formulation takes into account the effects of fluid loading. The governing coupled structural/acoustic equations of motion are solved using a modal approach combined with an interpolation technique of the reduced radiation impedance matrix components of the fluid. The numerical results show the accuracy of the proposed approach. In addition, a parametric study is carried out to highlight the influence of geometrical and material variables on the damping characteristics, which could be used as design parameters for the optimization problem.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper presents a finite element formulation to analyze the vibro-acoustic response of plates with constrained-layer damping treatment. This formulation takes into account the effects of fluid loading. The governing coupled structural/acoustic equations of motion are solved using a modal approach combined with an interpolation technique of the reduced radiation impedance matrix components of the fluid. The numerical results show the accuracy of the proposed approach. In addition, a parametric study is carried out to highlight the influence of geometrical and material variables on the damping characteristics, which could be used as design parameters for the optimization problem. |
Samir Assaf; Mohamed Guerich Numerical Prediction of Noise Transmission Loss Through Viscoelastically Sandwich panels Article de journal Journal of Sandwich Structures & Materials, 10 (5), p. 359-384, 2008. Résumé | Liens | BibTeX @article{ASSAF2008,
title = {Numerical Prediction of Noise Transmission Loss Through Viscoelastically Sandwich panels},
author = { Samir Assaf and Mohamed Guerich},
url = {http://jsm.sagepub.com/content/10/5/359.refs},
year = {2008},
date = {2008-09-01},
journal = {Journal of Sandwich Structures & Materials},
volume = {10},
number = {5},
pages = {359-384},
abstract = {This study describes the numerical prediction of noise transmission loss (TL) through sandwich plates subjected to an acoustic plane wave or a diffuse sound field excitation. The sandwich plate considered is made up of a viscoelastic core sandwiched between two elastic faces. The model presented is based on a finite element formulation for the sandwich plate coupled to a boundary element method for the acoustic medium. The plate formulation is derived from Kirchhoff's theory for the elastic faces and Mindlin's theory for the core. The strain and kinetic energies of the sandwich plates are written in terms of the mean and relative in-plane displacements of the faces and the transverse deflection of the plate. The diffuse sound field is modeled as a superposition of uncorrelated plane waves with equal amplitude. The vibroacoustic equations obtained are discretized using a triangular finite element. The accuracy of the present model is demonstrated by comparing it with analytical and experimental results available in the literature. New results on laminated glass showing the effects of temperature on the TL are presented.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This study describes the numerical prediction of noise transmission loss (TL) through sandwich plates subjected to an acoustic plane wave or a diffuse sound field excitation. The sandwich plate considered is made up of a viscoelastic core sandwiched between two elastic faces. The model presented is based on a finite element formulation for the sandwich plate coupled to a boundary element method for the acoustic medium. The plate formulation is derived from Kirchhoff's theory for the elastic faces and Mindlin's theory for the core. The strain and kinetic energies of the sandwich plates are written in terms of the mean and relative in-plane displacements of the faces and the transverse deflection of the plate. The diffuse sound field is modeled as a superposition of uncorrelated plane waves with equal amplitude. The vibroacoustic equations obtained are discretized using a triangular finite element. The accuracy of the present model is demonstrated by comparing it with analytical and experimental results available in the literature. New results on laminated glass showing the effects of temperature on the TL are presented. |
Nicolas Trompette; Mohamed Guerich An Experimental Validation of a Vibro-Acoustic simplified prediction by the use of simplified methods Article de journal Applied Acoustics, 66 , p. 427-445, 2004. Résumé | Liens | BibTeX @article{TROMPETTE2004,
title = {An Experimental Validation of a Vibro-Acoustic simplified prediction by the use of simplified methods},
author = { Nicolas Trompette and Mohamed Guerich},
url = {http://www.sciencedirect.com/science/article/pii/S0003682X04001434},
year = {2004},
date = {2004-09-01},
journal = {Applied Acoustics},
volume = {66},
pages = {427-445},
abstract = {Predicting the vibro-acoustic behaviour of a structure is usually done by using the well established finite element (FE) method and boundary element method. This paper presents a vibro-acoustic prediction case performed on a metal box using less accurate but simplified methods: sub-structuring for the calculation of the dynamic response of the structure, and a monopole distribution for the radiated noise calculation. Both are less accurate but faster methods than previous ones. An experimental validation was performed. It led to the conclusion that these methods give precise results and are sufficient for the pre-design of structures in the low frequency domain. However, this conclusion must be moderated by the fact that in spite of the simplicity of the structure, the FE model had to be adjusted to the experiments to yield to a result close to the experiments.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Predicting the vibro-acoustic behaviour of a structure is usually done by using the well established finite element (FE) method and boundary element method. This paper presents a vibro-acoustic prediction case performed on a metal box using less accurate but simplified methods: sub-structuring for the calculation of the dynamic response of the structure, and a monopole distribution for the radiated noise calculation. Both are less accurate but faster methods than previous ones. An experimental validation was performed. It led to the conclusion that these methods give precise results and are sufficient for the pre-design of structures in the low frequency domain. However, this conclusion must be moderated by the fact that in spite of the simplicity of the structure, the FE model had to be adjusted to the experiments to yield to a result close to the experiments. |
Mohamed Guerich; Mohamed-Ali Hamdi A Numerical Method for Vibro-Acoustic Problems with Incompatible Finite Element Meshes Using B-Spline Functions Article de journal Journal of Acoustical Society of America, 105 (3), p. 1682-1694, 1999. BibTeX @article{M.GUERICH1999,
title = {A Numerical Method for Vibro-Acoustic Problems with Incompatible Finite Element Meshes Using B-Spline Functions},
author = { Mohamed Guerich and Mohamed-Ali Hamdi},
year = {1999},
date = {1999-03-01},
journal = {Journal of Acoustical Society of America},
volume = {105},
number = {3},
pages = {1682-1694},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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Conférences
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Mohamed Guerich; Jérôme Pasquiet Optimisation on discrete variables : Application to structural design 5500 - 5599 Conférence Actes des quatrièmes Journées Scientifiques et techniques en Mécanique des Matériaux : , :, JSTMM'02, Les procédés de formage Réalité et simulation, Monastir, TUNISIE, 2002. BibTeX @conference{GUERICH2002b,
title = {Optimisation on discrete variables : Application to structural design},
author = { Mohamed Guerich and Jérôme Pasquiet},
year = {2002},
date = {2002-10-26},
booktitle = {Actes des quatrièmes Journées Scientifiques et techniques en Mécanique des Matériaux : , :},
pages = {173-181},
publisher = {JSTMM'02, Les procédés de formage Réalité et simulation},
address = {Monastir, TUNISIE},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Mohamed Guerich; Nicolas Trompette An experimental validation of vibro-acoustic prediction by the use of simplified methods 5500 - 5599 Conférence Proc of the International Conference on Noise and Vibration : ISMA 2002, Leuven, BELGIUM, 2002. BibTeX @conference{GUERICH2002,
title = {An experimental validation of vibro-acoustic prediction by the use of simplified methods},
author = { Mohamed Guerich and Nicolas Trompette},
year = {2002},
date = {2002-09-16},
booktitle = {Proc of the International Conference on Noise and Vibration : ISMA 2002, Leuven, BELGIUM},
pages = {2165-2170},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Mohamed Guerich; Abderrahim Abouelainine; Patrick Morelle Application of Approximation Concepts to Branch and Bound Method for Large Scale Problems 5500 - 5599 Conférence 8th AIAA Symposium on Multidisciplinary Analysis and Optimisation, California, USA, 2000. BibTeX @conference{M.GUERICH2014,
title = {Application of Approximation Concepts to Branch and Bound Method for Large Scale Problems},
author = { Mohamed Guerich and Abderrahim Abouelainine and Patrick Morelle},
year = {2000},
date = {2000-09-08},
publisher = {8th AIAA Symposium on Multidisciplinary Analysis and Optimisation},
address = {California, USA},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
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inproceedings
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Hoang T.H.; Guerich M.; Yvonnet J. A Numerical Incremental Homogenization Approach to Calculate Elastoplastic Heterogeneous Structures inproceedings European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), Crète, 2016. BibTeX @inproceedings{Guerichconf2016,
title = {A Numerical Incremental Homogenization Approach to Calculate Elastoplastic Heterogeneous Structures},
author = {Hoang T.H. and Guerich M. and Yvonnet J. },
year = {2016},
date = {2016-06-06},
booktitle = {European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), Crète},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Tognevi A.; Guerich M.; Yvonnet J. A multi-scale modeling method for heterogeneous structures without scale separation using a filterbased homogenization scheme inproceedings European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), June 5-10, 2016, Crète, Grèce., 2016. BibTeX @inproceedings{Guerichconf22016,
title = {A multi-scale modeling method for heterogeneous structures without scale separation using a filterbased homogenization scheme},
author = {Tognevi A. and Guerich M. and Yvonnet J. },
year = {2016},
date = {2016-06-06},
booktitle = {European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), June 5-10, 2016, Crète, Grèce.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet Effective size of RVE for finite element analysis of structures made of nonlinear random composites inproceedings 18th International Conference on Composite Structures (ICCS18), Lisbonne, Portugal, 2015. Résumé | Liens | BibTeX @inproceedings{hoang:hal-01166513,
title = {Effective size of RVE for finite element analysis of structures made of nonlinear random composites},
author = { Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
url = {https://hal-upec-upem.archives-ouvertes.fr/hal-01166513},
year = {2015},
date = {2015-06-01},
booktitle = {18th International Conference on Composite Structures (ICCS18)},
address = {Lisbonne, Portugal},
abstract = {In the present work, we propose to determine the size of a representative volume element (RVE) in the case of nonlinear random composites with either elastoplastic or elasto viscoplastic phases. In such a case, the general form of the effective constitutive behavior is not known in advance and the response must be evaluated either by direct numerical computations on the RVE, either by an appropriate approximation scheme. Previous methodologies [1,2] for determining the size of RVE usually rely on analyzing the convergence of the RVE response computed numerically with respect to its size. In the present work, we analyze the convergence of parameters related to an incremental homogenization scheme, with respect to (i) the size of the RVE and (ii) to statistical convergence related to microstructure realizations. For that purpose, we combine an incremental homogenization method [3] with a statistical convergence analysis of parameters related to the matrix phase only. The advantage is that the range of parameters to be identified is much narrower than for a general empirical constitutive law. Once identified and the convergence analysis performed with respect to both size of RVE and statistical realizations, the macroscopic constitutive law can be readily used for structure calculations. We illustrate the methodology by analyzing two-dimensional microstructures with randomly distributed cylindrical elastic rigid fibers, embedded in a elastoplastic or elasto-viscoplastic matrix. For these materials, the existence of an RVE is demonstrated for sizes of RVE corresponding to 17 − 18 and 14 − 15 times the diameter of the inclusions, respectively.
Effective size of RVE for finite element analysis of structures made of nonlinear random composites - ResearchGate. Available from: http://www.researchgate.net/publication/279488878_Effective_size_of_RVE_for_finite_element_analysis_of_structures_made_of_nonlinear_random_composites [accessed Jul 24, 2015].},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In the present work, we propose to determine the size of a representative volume element (RVE) in the case of nonlinear random composites with either elastoplastic or elasto viscoplastic phases. In such a case, the general form of the effective constitutive behavior is not known in advance and the response must be evaluated either by direct numerical computations on the RVE, either by an appropriate approximation scheme. Previous methodologies [1,2] for determining the size of RVE usually rely on analyzing the convergence of the RVE response computed numerically with respect to its size. In the present work, we analyze the convergence of parameters related to an incremental homogenization scheme, with respect to (i) the size of the RVE and (ii) to statistical convergence related to microstructure realizations. For that purpose, we combine an incremental homogenization method [3] with a statistical convergence analysis of parameters related to the matrix phase only. The advantage is that the range of parameters to be identified is much narrower than for a general empirical constitutive law. Once identified and the convergence analysis performed with respect to both size of RVE and statistical realizations, the macroscopic constitutive law can be readily used for structure calculations. We illustrate the methodology by analyzing two-dimensional microstructures with randomly distributed cylindrical elastic rigid fibers, embedded in a elastoplastic or elasto-viscoplastic matrix. For these materials, the existence of an RVE is demonstrated for sizes of RVE corresponding to 17 − 18 and 14 − 15 times the diameter of the inclusions, respectively.
Effective size of RVE for finite element analysis of structures made of nonlinear random composites - ResearchGate. Available from: http://www.researchgate.net/publication/279488878_Effective_size_of_RVE_for_finite_element_analysis_of_structures_made_of_nonlinear_random_composites [accessed Jul 24, 2015]. |
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet An incremental multilevel computational homogenization method for elastoplastic composites inproceedings 18th International Conference on Composite Structures (ICCS18), Lisbonne, Portugal, 2015. Résumé | Liens | BibTeX @inproceedings{hoang:hal-01166485,
title = {An incremental multilevel computational homogenization method for elastoplastic composites},
author = {Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
url = {https://hal-upec-upem.archives-ouvertes.fr/hal-01166485},
year = {2015},
date = {2015-06-01},
booktitle = {18th International Conference on Composite Structures (ICCS18)},
address = {Lisbonne, Portugal},
abstract = {In the present work, a multilevel computational homogenization method is proposed for solving
structure problems made of elastoplastic phases. To reduce computations costs of classical multi-
level finite element methods [2], we use an incremental framework, initiated in Hill citehill1965
and developed for semi-analytical method e.g. in [1]. In semi-analytical approaches, the approx-
imation of the Mori-Tanaka scheme induces limitations in accuracy for some configurations like
strongly anisotropic microstructures and does not allow capturing effective smooth hardening in-
duced by the different elastoplastic phases. In the proposed method, we use the incremental ap-
proach by computing directly the effective macroscopic tensor related to the linearized problem
numerically by Finite Elements on an RVE. The method is validated through an example of ho-
mogenization of a composite microstructure with elastic rigid fibers, embedded in an elastoplastic
matrix. The results showed that the method is more accurate than semi-anlytical methods and is
less computationally demanding than FE2. An incremental multilevel computational homogenization method for elastoplastic composites - },
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In the present work, a multilevel computational homogenization method is proposed for solving
structure problems made of elastoplastic phases. To reduce computations costs of classical multi-
level finite element methods [2], we use an incremental framework, initiated in Hill citehill1965
and developed for semi-analytical method e.g. in [1]. In semi-analytical approaches, the approx-
imation of the Mori-Tanaka scheme induces limitations in accuracy for some configurations like
strongly anisotropic microstructures and does not allow capturing effective smooth hardening in-
duced by the different elastoplastic phases. In the proposed method, we use the incremental ap-
proach by computing directly the effective macroscopic tensor related to the linearized problem
numerically by Finite Elements on an RVE. The method is validated through an example of ho-
mogenization of a composite microstructure with elastic rigid fibers, embedded in an elastoplastic
matrix. The results showed that the method is more accurate than semi-anlytical methods and is
less computationally demanding than FE2. An incremental multilevel computational homogenization method for elastoplastic composites - |
Julien Yvonnet; A. Tognevi; Guy Bonnet; M. Guerich A filter-based computational homogenization method for handling non-separated scales problems inproceedings 12e Colloque National en Calcul des Structures, Presqu’^ile de Giens, France, 2015. Liens | BibTeX @inproceedings{yvonnet:hal-01166483b,
title = {A filter-based computational homogenization method for handling non-separated scales problems},
author = { Julien Yvonnet and A. Tognevi and Guy Bonnet and M. Guerich},
url = {https://hal-upec-upem.archives-ouvertes.fr/hal-01166483},
year = {2015},
date = {2015-01-01},
booktitle = {12e Colloque National en Calcul des Structures},
address = {Presqu’^ile de Giens, France},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Julien Yvonnet; Guy Bonnet; A. Tognevi; M. Guerich Filter-based computational homogenization inproceedings 1st Pan-American congress on computational mechanics, Buenos Aires, Argentina, 2015, (Conf'erence invit'ee). Liens | BibTeX @inproceedings{yvonnet:hal-01147886,
title = {Filter-based computational homogenization},
author = { Julien Yvonnet and Guy Bonnet and A. Tognevi and M. Guerich},
url = {https://hal-upec-upem.archives-ouvertes.fr/hal-01147886},
year = {2015},
date = {2015-01-01},
booktitle = {1st Pan-American congress on computational mechanics},
address = {Buenos Aires, Argentina},
note = {Conf'erence invit'ee},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
la proc
|
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet A decoupled approach for computing the response of structures made of heterogeneous, random elastoplactic composites with hardening procédure 11th. World Congress on Computational Mechanics (WCCM XI), Barcelona, SPAIN, 2014. Résumé | Liens | BibTeX @proceedings{HOANG2014b,
title = {A decoupled approach for computing the response of structures made of heterogeneous, random elastoplactic composites with hardening},
author = { Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
url = {http://www.esilv.fr/ecole-ingenieur/wp-content/uploads/2014/07/a1303.pdf},
year = {2014},
date = {2014-07-25},
publisher = {11th. World Congress on Computational Mechanics (WCCM XI)},
address = {Barcelona, SPAIN},
abstract = {A decoupled approach for computing the response of structures made of heterogeneous, random elastoplactic composites with hardening},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
A decoupled approach for computing the response of structures made of heterogeneous, random elastoplactic composites with hardening |
Amen Tognevi; Mohamed Guerich; Julien Yvonnet Computational modelling of heterogeneous structures without scale separation: an approach based on nonlocal filter-based homogenization procédure 11th. World Congress on Computational Mechanics (WCCM XI), Barcelona, SPAIN, 2014. Liens | BibTeX @proceedings{atognevi2014b,
title = {Computational modelling of heterogeneous structures without scale separation: an approach based on nonlocal filter-based homogenization},
author = { Amen Tognevi and Mohamed Guerich and Julien Yvonnet},
url = {http://www.esilv.fr/ecole-ingenieur/wp-content/uploads/2014/07/a3013.pdf},
year = {2014},
date = {2014-07-20},
publisher = {11th. World Congress on Computational Mechanics (WCCM XI)},
address = {Barcelona, SPAIN},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet A procedure to determine the size of RVE nonlinear random heterogeneous material based on an incremental homogenization method procédure Stony Brook University Mechanics of Composites 2014 (MECHCOMP2014), June 8 - 12, 2014, USA, 2014. BibTeX @proceedings{HOANG2014,
title = {A procedure to determine the size of RVE nonlinear random heterogeneous material based on an incremental homogenization method},
author = { Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
year = {2014},
date = {2014-06-08},
publisher = {Mechanics of Composites 2014 (MECHCOMP2014), June 8 - 12, 2014},
address = {USA},
organization = {Stony Brook University},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
Mohamed Guerich; Samir Assaf Design vibro-acoustic Optimization of Sandwich panels procédure INTERNOISE’2013, Innsbruck, AUSTRIA, 2013. BibTeX @proceedings{GUERICH2013b,
title = {Design vibro-acoustic Optimization of Sandwich panels},
author = { Mohamed Guerich and Samir Assaf},
year = {2013},
date = {2013-09-18},
publisher = {INTERNOISE’2013},
address = {Innsbruck, AUSTRIA},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet Determination of the size of an RVE for nonlinear random composites procédure 3rd ICMM Int. Conference on Material Modelling incorporating, Warsaw, POLAND, 2013. BibTeX @proceedings{HOANG2013,
title = {Determination of the size of an RVE for nonlinear random composites},
author = { Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
year = {2013},
date = {2013-09-11},
publisher = {3rd ICMM Int. Conference on Material Modelling incorporating},
address = {Warsaw, POLAND},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
Samir Assaf; Mohamed Guerich Damping analysis of beams with partial coverage procédure Mediterranean congress on Acoustics (MCA2010),, Salé, MORROCO, 2010. BibTeX @proceedings{GUERICH2010,
title = {Damping analysis of beams with partial coverage},
author = { Samir Assaf and Mohamed Guerich},
year = {2010},
date = {2010-10-30},
publisher = {Mediterranean congress on Acoustics (MCA2010),},
address = {Salé, MORROCO},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
Samir Assaf; Mohamed Guerich A modal superposition method for vibro-acoustic response of sandwich plates procédure VCB’08 : Vibrations, Chocs & bruit, Lyon, FRANCE, 2008. BibTeX @proceedings{GUERICH2008b,
title = {A modal superposition method for vibro-acoustic response of sandwich plates},
author = { Samir Assaf and Mohamed Guerich},
year = {2008},
date = {2008-12-06},
publisher = {VCB’08 : Vibrations, Chocs & bruit},
address = {Lyon, FRANCE},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
Samir Assaf; Mohamed Guerich Optimization of Transmission loss of damped sandwich structures procédure International Conference on Noise and Vibration : ISMA 2008, Leuven, BELGIUM, 2008. BibTeX @proceedings{GUERICH2008,
title = {Optimization of Transmission loss of damped sandwich structures},
author = { Samir Assaf and Mohamed Guerich},
year = {2008},
date = {2008-09-17},
publisher = {International Conference on Noise and Vibration : ISMA 2008},
address = {Leuven, BELGIUM},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
Samir Assaf; Mohamed Guerich Parametric study of Noise transmission Loss of damped sandwich structures procédure 12th AIAA/ISSMO Conference, Victoria, British Colombia, CANADA, 2008. BibTeX @proceedings{GUERICH2008bb,
title = {Parametric study of Noise transmission Loss of damped sandwich structures},
author = { Samir Assaf and Mohamed Guerich},
year = {2008},
date = {2008-09-12},
publisher = {12th AIAA/ISSMO Conference},
address = {Victoria, British Colombia, CANADA},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
Samir Assaf; Mohamed Guerich Influence of temperature on sound transmission through viscoelastic sandwich plates procédure ACOUSTICS’08, Paris, FRANCE, 2008. BibTeX @proceedings{GUERICH2008bb,
title = {Influence of temperature on sound transmission through viscoelastic sandwich plates},
author = { Samir Assaf and Mohamed Guerich},
year = {2008},
date = {2008-07-04},
publisher = {ACOUSTICS’08},
address = {Paris, FRANCE},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
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