Publications

Mechanics

Validation of a new viscoelastic model for unidirectional polymer matrix composites by analytical and numerical homogenisation

The long-term response of unidirectional, fibres-reinforced, polymer matrix composites is affected by the viscoelastic behaviour of the matrix. Most composite models introduce a different relaxation function for each of the five elastic parameters…

Federica Daghia, Alexandre Lagache, L Di Gennaro

European Journal of Mechanics - A/Solids - 2023

Civil Engineering

Machine learning and micromechanics as allies to establish composition-property correlations in cement pastes

Composition-property correlations are fundamental to understand cement-based materials behavior and optimize their formulation. Modelling based on fundamental material component constitutes a reliable tool to establish these correlations with the…

Tulio Honorio, Sofiane Ait Hamadouche, Amélie Fau

Journal of Theoretical, Computational and Applied Mechanics - 2023

Optimization and Control

The distance to cubic symmetry class as a polynomial optimization problem

Generically, a fully measured elasticity tensor has no material symmetry. For single crystals with a cubic lattice, or for the aeronautics turbine blades superalloys such as Nickel-based CMSX-4, cubic symmetry is nevertheless expected. It is in…

Perla Azzi, Rodrigue Desmorat, Boris Kolev, Fabien Priziac

Journal of Elasticity - 2023

Mechanics of materials

Distance to a constitutive tensor isotropy stratum by Lasserre polynomial optimization method

We give a detailed description of a polynomial optimization method allowing to solve a problem in continuum mechanics: the determination of the elasticity or the piezoelectricity tensor of a specific isotropy stratum the closest to a given…

Perla Azzi, Rodrigue Desmorat, Boris Kolev, Fabien Priziac

Mathematics and Mechanics of Complex Systems - 2023

Structural mechanics

A new Kalman filter approach for structural parameter tracking: application to the monitoring of damaging structures tested on shaking-tables

In this paper, a new data assimilation framework for correcting finite element models from datasets acquired on-the-fly in low-frequency dynamics is presented. An Unscented Kalman filter algorithm is coupled with a modified Constitutive Relation…

Matthieu Diaz, Pierre-Étienne Charbonnel, Ludovic Chamoin

Mechanical Systems and Signal Processing - 2023

Engineering Sciences

Compressibility and shear strength of a tropical fibrous peat

This study examines the compressibility and shear strength of an Indonesian fibrous peat through oedometric and consolidated undrained (CU) triaxial tests. The influence of fibres is considered by preparing two series of specimens – undisturbed and…

Z.-S. Li, W. Rahayu, H. Souli, B. Soepandji, J.-M. Fleureau

Géotechnique Letters - 2022

Structural mechanics

On a physics-compatible approach for data-driven computational mechanics

Within the framework of the thermodynamics of irreversible processes, one introduces a general vision of data-driven computational mechanics, adapted to history-dependent materials, through the concept of the “Experimental Constitutive Manifold” …

Pierre Ladevèze, Paul-William Gerbaud, David Néron

Fadi Aldakheel - 2022

Engineering Sciences