• Lubineau G., (2009).
A goal-oriented filtering technique of field measurements for parameters identification of material model.
Computational Mechanics, accepted, to appear. Download Draft.
Abstract: The post-processing of experiments with nonuniform fields is still a challenge: the information is often much richer, but its interpretation for identification purposes is not straightforward. However, this is a very promising field of development because it would pave the way for the robust identification of multiple material parameters using only a small number of experiments.
This paper presents a goal-oriented filtering technique in which data are combined into new output fields which are strongly correlated with specific quantities of interest (the material parameters to be identified). Thus, this combination, which is nonuniform in space, constitutes a filter of the experimental outputs, whose relevance is quantified by a quality function based on global variance analysis. Then, this filter is optimized using genetic algorithms.

• Lubineau G., D. Violeau and P. Ladevèze (2009).
Illustrations of a microdamage model for laminates under oxidizing thermal cycling.
Composites Science and Technology, v. 69(1), pp. 3-9. Download Draft.
Abstract: Degradations initiated near the edges of a laminate can have a significant effect on its state of degradation, even at the core. Indeed, results from the literature show that laminates which have the same stress state at the core can have completely different states of degradation, even far away from the edges. The paper discusses the influence of the edge effect on damage initiation and propagation for a specific example. A computational micromechanical approach to the degradation of laminated composites was developed recently at LMT-Cachan. This is a hybrid approach in which, depending on the scale, the mechanisms are described using continuous damage mechanics or finite fracture mechanics. Initially developed for static loading, this technique is being extended to fatigue and environmental effects. The aim of this paper is to illustrate the capability of such an approach to take into account major observations during cyclic loading in an oxidizing atmosphere, even when edge effects are significant.

• Lubineau G. (2009).
A pyramidal modeling scheme for laminates - identification of transverse cracking.
International Journal of Damage Mechanics, accepted, to appear. Download Draft.
Abstract: Modern approaches to the modeling of composites are no longer limited to the use of a single approach for the whole structure or for all the degradation mechanisms. On the contrary, modern advances enable the definition of truly multiscale models in order to describe the degradation. Thus, homogenized models can be rigorously deduced from the underlying micromechanics. In the past few years, LMT-Cachan has made a number of contributions to the three key points of these multiscale approaches: (1) the improvement of the reference model on the fine scale, (2) the definition of a controlled correspondence between the scales, and (3) the definition of the associated homogenized model. Here, the complete approach is formalized as a modeling pyramid. Each mechanism of degradation is described on the more relevant scale within an ``hybrid micromechanical model". Based on the reference modeling, constitutive laws can be transfered within the unique framework of damage mechanics for being applied within commercial softwares.  As an illustration, we focus more specifically on the homogenized law obtained for transverse cracking. The constitutive law and the material parameters issued from the homogenization, which define the model on the higher scale, are reviewed. Their identification is studied in detail. An important key point of the pyramidal approach appears here. Since it allows the interpretation of every quantity on different scales (both at the micromechanical and  at the mesomechanical scales), the most relevant scale can be used for the identification of a chosen property. We limit ourselves to a ``classical" identification. We mean by classical identification  a procedure based on straight specimens. This process, to a certain extent, uses a parametric simulation of the nonlinear model based on a finite element representation of the test samples. The complete model is then used for the simulation of an industrial sample with hole. That example emphasizes the interest of underlying micromechanial variables for experimental validation.

• Lubineau G. (2008).
Estimation of residual stresses in laminated composites using field measurements on a cracked sample.
Composites Science and Technology, v. 68(13), pp. 2761-2769. Download Draft.
Abstract: Today, advanced damage models taking into account residual stresses are available. In particular, microcracking as a degradation mechanism in laminates is very sensitive to manufacturing-induced stresses. However, these stresses are often introduced through a model parameter whose identification remains difficult or requires time-consuming and costly additional tests. Here, we propose a relatively simple method based on the observation of the displacement field associated with the creation of a transverse crack in a crosswise laminate. Subsequently, this displacement field can be reinterpreted according to the model being used in order to build the quantity required by the model.

• Lubineau G. and P. Ladevèze (2007).
Construction of a micromechanics-based intralaminar mesomodel, and illustrations in ABAQUS/Standard.
Computational Materials Science, v. 43(1), pp. 137-145. Download Draft.

• Lubineau G., Ladevèze P. and D. Violeau (2006).
Durability of CFRP laminates under thermomechanical loading: a micromechanics-based damage mesomodel.
Composites Science and Technology, v. 66(7-8), pp. 983-992. Download Draft.

• Ladevèze P., Lubineau G. and D. Violeau (2006).
A computational damage micromodel of laminate composites.
International Journal of Fracture, v. 137(1-4), pp. 139-150. Download Draft.

• Ladevèze P., Lubineau G. and D. Marsal (2006).
Towards a bridge between the micro- and the mesomechanics of delamination for laminated composites.
Composites Science and Technology. v. 66(6), pp. 698-712. Download Draft.

• Lubineau G. and P. Ladevèze (2005).
Towards a micromechanics-based damage mesomodel for CFRP laminates under thermomechanical cyclic loading.
Science and Engineering of Composite Materials, v. 12(1-2), pp. 71-82. Download Draft.

• Ladevèze P. and G. Lubineau (2004).
A computational mesodamage model for life prediction for laminates.
Fatigue in Composite Materials, A Review of the Science and Technology of the Fatigue Response of Fibre-Reinforced Plastics Composites Science and Technology, Bryan Harris ed. (University of Bath, UK), Woodhead-Publishing, pp. 432-441. Download Draft.

• Ladevèze P. and G. Lubineau (2003).
Pont entre les ”micro-” et ”meso-” mécaniques des composites stratifiés.
Comptes-Rendus à l’Académie des Sciences, C.R. Mécanique, v. 331, pp. 537- 544. Download Draft.

• Ladevèze P. and G. Lubineau (2003).
On a damage mesomodel for laminates: micromechanics basis and improvement.
Mechanics of Materials, v. 35(8), pp. 763-775. Download Draft.

• Ladevèze P. and G. Lubineau (2002).
An enhanced mesomodel for laminates based on micromechanics.
Composites Science and Technology, v. 62, pp. 533-541. Download Draft.

• Ladevèze P. and G. Lubineau (2001).
On a damage mesomodel for laminates: micro-meso relationships, possibilities and limits.
Composites Science and Technology, v. 61, pp. 2149-2158. Download Draft.

Genet M., Ladevèze P., Lubineau P., Baranger E. and A. Mouret (2008).
Toward a virtual material for lifetime prediction of CMCs.
13th European Conference on Composite Materials.

Trovalet M., Ladevèze P. and G. Lubineau (2008).
An enhanced computational micromodel for CFRP laminates.
13th European Conference on Composite Materials.

Galucio A.C., Mohite P. M., Lubineau G. and P. Ladevèze 2008).
Validation on intralaminar behavior of the enhanced damage LMT-mesomodel.
13th European Conference on Composite Materials.

Lubineau G. (2008).
A pyramidal damage modeling: illustrations using Abaqus.
49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. April 2008. Chicago, USA.

Trovalet M., Ladevèze P. and G. Lubineau (2008).
A multiscale damage model for analysis of laminated composites at the micro scale.
5th European Congress on Computational Methods in Applied Sciences and Engineering.

Bordeu F., Boucard P.A., Lubineau G. and H. Leclerc (2008).
A high performance strategy for the simulation of composites at mesoscale.
6th International Conference on Engineering Computational Technology.

Lubineau G., (2007). A computational damage mesomodel based on micromechanics, with
applications. USNCCMM9. July 2007. San Francisco, USA.

Lubineau G., Ladevèze P. and Z. Gaiech (2006).
Analysis of laminates through a damage mesomodel in ABAQUS.
International Workshop on Computational Mechanics of Materials. September 2006. Lublin, Poland.

Lubineau G. and P. Ladevèze (2006).
Identification of a Computational Micro Modeling of Degradation for Laminated Composites.
Conference on Damage in Composite Materials: Simulation and Non-destructive Testing. September 2006. Stuttgart, Deutchland.

Lubineau G., Ladevèze P. and D. Violeau (2006).
Micromodel based computations for laminated composites.
8th International Conference on Computational Structures Technology. September 2006. Las Palmas, Spain.

Lubineau G., Ladevèze P. and D. Violeau (2006).
A computational multiscale modelling for laminated composites: basic aspects and validation.
6th European Solid Mechanics Conference. August 2006. Budapest, Hungary.

Lubineau G., Ladevèze P., Violeau D. and H. Leclerc (2006).
A multiscale computational strategy for laminated structures analysis.
Seventh World Congress on Computational Mechanics, IACM, H.A. Mang, F.G. Rammerstorfer and J. Eberhardsteiner eds.. July 17-21 2006. Los Angeles, USA.

Ladevèze P., Lubineau G. and D. Violeau (2005).
Toward the damage analysis of laminated composites on the micro scale.
8th International Conference on Computational Plasticity. September 5-7 2005. Barcelona, Spain.

Ladevèze P., Lubineau G., Violeau D. and D. Marsal (2005).
Micro and meso computational damage modelling for delamination prediction.
11th International Conference on Fracture. March 20-25 2005. Turin, Italy.

Marsal D., Ladevèze P. and G. Lubineau (2005).
About the out-of-the-plane interactions between the damage of ply and of interface in laminates.
IUTAM Symposium on Multiscale Modelling of Damage and Fracture Processes in Composite Materials. May 23-27 2005. Kazimierz Dolny, Poland.

Ladevèze P. and Lubineau G. and Violeau D. and D. Marsal (2005).
A Computational Damage Micromodel for Laminate Composites.
IUTAM Symposium on Multiscale Modelling of Damage and Fracture Processes in Composite Materials. May 23-27 2005. Kazimierz Dolny, Poland.

Ladevèze P., Marsal D. et G. Lubineau (2004).
Relationship between the micro- and mesomechanics of laminates under plane and out-of-the-plane macro loading.
11th European Conference on Composite Materials. May-June 2004. Rhodes, Greece.

Lubineau G. and P. Ladevèze (2004).
A micromechanics-based damage mesomodel for laminates under quasi-static and fatigue loading.
DURACOSYS 2004. May 12-15, 2004. Riga, Latvia.

Lubineau G., Ladevèze P. and D. Marsal (2003).
Micromechanics and mesomechanics for laminates: synergy and model improvements.
ECCM V. August 2003. Thessaloniki, Greece.

Ladevèze P., Lubineau G. and D. Marsal (2003).
Toward a complete bridge between the micro and mesomechanics of delamination for laminated composites.
Workshop ASDD2003, September 2003. Cachan, France.

Lubineau G. and P. Ladevèze (2002).
Micro-meso computational modeling of laminated composites.
Fith World Congress on Computational Mechanics, IACM, H.A. Mang, F.G. Rammerstorfer and J. Eberhardsteiner eds.. July 7-12 2002. Vienna, Austria.

Bordeu F., Boucard P.A. and G. Lubineau (2008).
A mesoscale model for damage, cracking and delamination on composite materials.
8th International Conference on durability of Composite Systems.

Lubineau G. and P. Ladevèze (2005).
A meso-compatible enhanced micromechanical description of transverse cracking and diffuse damage in CFRP laminates.
Mechanics and Materials Conference 2005, ASME, ASCE, SES. June 1st-3rd 2005. Baton-Rouge, USA.

Ladevèze P., Lubineau G. and D. Violeau (2005).
A computational micromechanics for discrete degradation of laminated composites.
Mechanics and Materials Conference 2005, ASME, ASCE, SES. June 1st-3rd 2005. Baton-Rouge, USA.

Lubineau G. and P. Ladevèze (2004).
Computational micro-meso modelling for laminates under thermomechanical fatigue and oxidizing atmosphere.
ICTAM 2004 - 21st International Congress of Theoretical and Applied Mechanics. Varsaw, Poland.

Lubineau G. and P.Ladevèze (2003).
Complete micro-meso relationship for laminated composites including edge effects.
Mechanics and Materials Summer Conference 2003, ASME, ASCE, SES. June 17-20 2003. Phoenix, USA.

Lubineau G. and P. Ladevèze (2001).
On the physical basis of a mesomodel for laminates: micro-meso relations.
Mechanics and Materials Summer Conference 2001, ASME, ASCE, SES. June 27-29 Juin 2001. San Diego, USA.