Publications

Mechanics of materials

Identification of the effective interface between the homogenized phases of a dual-weave 3D composite

Hybridization enhances composite properties by assembling several reinforcement materials. In woven composites, the distribution of different yarns can induce a macroscopic heterogeneity in the thermomechanical properties, which can be considered in…

Léonard Turpin, Jan Neggers, Arturo Mendoza, Julien Schneider, Yannick Pannier, Stéphane Roux

European Journal of Mechanics - A/Solids - 2024

Mathematics

Empowering PGD-based parametric analysis with Optimal Transport

The Proper Generalized Decomposition (PGD) is a Model Order Reduction framework that has been proposed to be able to do parametric analysis of physical problems. These parameters may include material properties, boundary conditions, etc. With this…

D. Muñoz, S. Torregrosa, Olivier Allix, Francisco Chinesta

Finite Elements in Analysis and Design - 2024

Electric power

Effects of Filtering and Current-angle Adjustment on the Multi-Material Topology Optimization of a 3-phase Stator

This paper investigates MMTO methods to design 3-phase PMSM stators, showing that a usual gradient descent leads to non-manufacturable local optima. A multi-material density filtering consistent with the antiperiodic boundary conditions smooths the…

Théodore Cherrière, S. Hlioui, Luc Laurent, François Louf, Hamid Ben Ahmed, Mohamed Gabsi

IEEE Transactions on Magnetics - 2024

Neural and Evolutionary Computing

NN-mCRE: a modified Constitutive Relation Error framework for unsupervised learning of nonlinear state laws with physics-augmented Neural Networks

This article proposes a new approach to train physics-augmented neural net-works with observable data to represent mechanical constitutive laws. To trainthe neural network and learn thermodynamics potentials, the proposed methoddoes not rely on…

Antoine Benady, Emmanuel Baranger, Ludovic Chamoin

International Journal for Numerical Methods in Engineering - 2024

Engineering Sciences

Digital image correlation analyses of masonry infilled frame: Uncertainty-based mesh refinement and damage quantification

Masonry walls are subjected to cyclic lateral loads to study damage caused by earthquakes. Imaging techniques are useful to quantify crack networks in such tests, where preferential locations for their initiation are not present. However, detecting…

Vinicius Fiocco Sciuti, Rafael Vargas, Nestor Guerrero, María Eugenia Marante, François Hild

Mathematics and Mechanics of Solids - 2024

Materials

Model-based dimensional NDE from few X-ray radiographs: Application to the evaluation of wall thickness in metallic turbine blades

The extraction of 3D dimensional measurements based on a limited number of 2D X-ray radiographs of a part would offer a significant speed-up of quality control procedures in industry. However, there are challenges with respect to both measurements…

Cédric Fragnaud, Clément Remacha, Julian Andrés Betancur Acevedo, Stéphane Roux

Precision Engineering - 2024

Solid mechanics

Upper bounds estimates of the distance to cubic or orthotropic elasticity

We address the problem, not of the determination-which usually needs numerical methods-but of an accurate analytical estimation of the distance of a raw elasticity tensor to cubic symmetry and to orthotropy. We point out that there are not one but…

Rodrigue Desmorat, Boris Kolev

Comptes Rendus. Mécanique - 2024

Differential Geometry

Objective rates as covariant derivatives on the manifold of Riemannian metrics

The subject of so-called objective derivatives in Continuum Mechanics has a long history and has generated varying views concerning their true mathematical interpretation. Several attempts have been made to provide a mathematical definition that…

Boris Kolev, Rodrigue Desmorat

Archive for Rational Mechanics and Analysis - 2024

Material chemistry

Influence of natural aging on the chemical composition of hemp mortars

In recent years, bio-based building materials have become increasingly popular in the field of low-carbon construction. Different bio-based solutions are being adopted because of their advantageous hygrothermal properties and low economic and…

Dmytro Kosiachevskyi, Kamilia Abahri, A Daubresse, E Prat, Mohend Chaouche

Journal of Physics: Conference Series - 2023

Engineering Sciences

Influence of natural aging on the chemical composition of hemp mortars

Abstract In recent years, bio-based building materials have become increasingly popular in the field of low-carbon construction. Different bio-based solutions are being adopted because of their advantageous hygrothermal properties and low economic…

D Kosiachevskyi, K Abahri, A Daubresse, E Prat, Mohend Chaouche

Journal of Physics: Conference Series - 2023