Laboratoire de Mécanique des Contacts et des Structures

A joint research unit UMR5259 of the INSA Lyon and the CNRS, the role of LaMCoS is to carry out research on understanding and controlling the behavior of mechanical structures and systems by studying their interfaces.

We innovate to improve understanding of fundamental phenomena to anticipate major societal challenges and respond to technological problems in the fields of Transport, Energy, Health, Biomedicine, Sport and Machine Tools.

An overview of the scientific results of the laboratory

  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Package drop test: forces on the protected object and energy distribution
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Study of losses in transmission belts
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • Rotating machine on active magnetic bearings
  • Distributed piezoelectric sensors for boundary forces measurements
  • Finite element simulation of the ballooning of a Zircaloy-4 sheath under conditions simulating a LOCA. Several physics involved, including elasto-v...
  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • Hybrid vibration control
  • <a href='./files/apercu_deroulant/pdf/10_EN.pdf'>Efficient multigrid FE solver</a>
  • Boundary layer in an EHL contact
  • Advanced Chebyshev expansion for identification on continuous structures
  • Control of rotating machinery supported by Active Magnetic Bearings (AMB)
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • Rotor demonstrator on PMA
  • Contact spalling
  • Pressure perturbations due to an indent crossing a contact
  • Visco-elastic contact
  • Diagnostic and monitoring of rotating parts in vehicles
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Active control of embedded electronic cards
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Bio-tribology for the prevention, diagnosis and early treatment of pathologies
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • Stress at the root of a spiral bevel gear
  • Load passage for a rough contact on a granular mass and illustration of the maximum shear stress
  • Hybrid vibration control
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • Explosion tests carried out at the DGA TN Tourris site
  • Lipid structures of synovial fluid in healthy and arterial cases
  • <a href='./files/apercu_deroulant/pdf/13_EN.pdf'>Pressure distribution between an oil control ring and a textured liner</a>
  • Tactile perception
  • Thermal memory effect
  • Silent wheel: Identification and control
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
  • Flange roller-end contact: numerical (FEM) vs experimental (interferometry) values of the lubricant film thickness (Trybogyr)
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
  • Validation of the hybrid modular model: Comparison of tooth pressure with an EF model for thin-walled gears (source: CIFRE Safran Helicopter Engine...
  • Adhesive contact
  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • 3D discrete simulation of wear flow in dry contact
  • Velocity vectors in a carotid artery in healthy and pathological cases
  • Molecular Dynamics simulation of ZDDP effects on friction in nano-scale lubricated contacts
  • Simulation of rolling contact on an elastic-plastic heterogeneous mass
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • 2dof electromagnetic generator for railway applications
  • Nonlinear vibrations of M/NEMS resonant sensors
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Equipex Phare
  • Elasto-Visco-Plastic Buckling of Thick Shell [Jacquet et al. 2021]
  • <a href='./files/apercu_deroulant/pdf/11_EN.pdf'>'Measurement' of pressure spike & lubricant rheology</a>
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The last 10 publications of the laboratory

  • A review of characteristic lengths in the coupled criterion framework and advanced fracture models
    By : Molnar, Gergely, Doitrand, Aurelien, Estevez, Rafael, Gravouil, Anthony
    COMPTES RENDUS MECANIQUE - Published : 2025
  • Creep constitutive model for salt rock considering loading and unloading path based on state variables
    By : Fan, Jinyang, Yang, Fan, Li, Zongze, Zou, Yang, Chen, Jie, Jiang, Deyi, Nelias, Daniel
    GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES - Published : DEC 2025
  • Impact of a prophylactic mesh on the biomechanics of abdominal wall closure: an animal study
    By : Le Ruyet, Anicet, Pillet, Baptiste, Vegleur, Anthony, Jourdan, Arthur, Bel-Brunon, Aline, Boure, Ludovic, Pierrat, Baptiste
    JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS - Published : AUG 2025
  • Case-Based Simulation to Support Complex Active Catheterization: Preliminary Results
    By : Badrou, Arif, de Turenne, Aurelien, Lescanne, Nathan, Szewczyk, Jerome, Blanc, Raphael, Hamila, Nahiene, Tardif, Nicolas, Bel-Brunon, Aline, Haigron, Pascal
    IRBM - Published : JUN 2025
  • Accuracy, consistency, and contextual understanding of large language models in restorative dentistry and endodontics
    By : Lafourcade, Claire, Kerouredan, Olivia, Ballester, Benoit, Richert, Raphael
    JOURNAL OF DENTISTRY - Published : JUN 2025
  • Vibration Control of AMB-Rotor System Under Base Motions Based on Disturbance Observer
    By : Zhang, Yue, Xu, Yuanping, Zhou, Jin, Zhou, Yang, Mahfoud, Jarir
    IEEE-ASME TRANSACTIONS ON MECHATRONICS - Published : MAY 2 2025
  • Video-based diagnosis of a rolling element bearing using a high-speed camera: Feedback on the Survishno 2023 conference contest
    By : Leclere, Quentin, Andre, Hugo, Antonia, Jerome, Burel, Arthur, Capdessus, Cecile, Cocconcelli, Marco, D'Elia, Gianluca, Daga, Alessandro Paolo, Dion, Jean-Luc, El Badaoui, Mohammed, El Hidali, Abdallah, Garibaldi, Luigi, Girardin, Francois, Griffaton, Julien, Gryllias, Konstantinos, Han, Yunhyeok, Helsen, Jan, Karkafi, Fadi, Kestel, Kayacan, Kordylas, Layla, Kunte, Deepti, Lo Feudo, Stefania, Marsick, Adrien, Marx, Douw, Mauricio, Alex Ricardo, Miranda-Fuentes, Johann, Peeters, Cedric, Poupon, T
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Published : MAY 1 2025
  • Fluid-structure-growth modeling in ascending aortic aneurysm: capability to reproduce a patient case
    By : Yan, Kexin, Ye, Wenfeng, Martinez, Antonio, Geronzi, Leonardo, Escrig, Pierre, Tomasi, Jacques, Rochette, Michel, Haigron, Pascal, Bel-Brunon, Aline
    BIOMECHANICS AND MODELING IN MECHANOBIOLOGY - Published : APR 2025
  • Study of load distribution and ellipse truncation for angular contact pitch bearings-blade assembly subjected to external loads
    By : Duquesne, Remy, Nelias, Daniel, Morterolle, Sebastien, Ancey-Rocchi, Stella
    TRIBOLOGY INTERNATIONAL - Published : APR 2025
  • Bio-inspiration from the Issus Nymph gear - strength analysis
    By : Guilbert, Berengere, Winger, Marie, Cavoret, Jerome, Sutton, Gregory, Johnston, Richard, Ville, Fabrice
    MECHANICS & INDUSTRY - Published : APR 4 2025

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