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

  • Boundary layer in an EHL contact
  • Study of losses in transmission belts
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Hybrid vibration control
  • Advanced Chebyshev expansion for identification on continuous structures
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • <a href='./files/apercu_deroulant/pdf/10_EN.pdf'>Efficient multigrid FE solver</a>
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • Package drop test: forces on the protected object and energy distribution
  • Diagnostic and monitoring of rotating parts in vehicles
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Flange roller-end contact: numerical (FEM) vs experimental (interferometry) values of the lubricant film thickness (Trybogyr)
  • Simulation of rolling contact on an elastic-plastic heterogeneous mass
  • Distributed piezoelectric sensors for boundary forces measurements
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • Rotor demonstrator on PMA
  • Lipid structures of synovial fluid in healthy and arterial cases
  • Equipex Phare
  • Silent wheel: Identification and control
  • Hybrid vibration control
  • Adhesive contact
  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • Active control of embedded electronic cards
  • Bio-tribology for the prevention, diagnosis and early treatment of pathologies
  • Finite element simulation of the ballooning of a Zircaloy-4 sheath under conditions simulating a LOCA. Several physics involved, including elasto-v...
  • Thermal memory effect
  • Tactile perception
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Nonlinear vibrations of M/NEMS resonant sensors
  • Rotating machine on active magnetic bearings
  • Molecular Dynamics simulation of ZDDP effects on friction in nano-scale lubricated contacts
  • Validation of the hybrid modular model: Comparison of tooth pressure with an EF model for thin-walled gears (source: CIFRE Safran Helicopter Engine...
  • Visco-elastic contact
  • Control of rotating machinery supported by Active Magnetic Bearings (AMB)
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • Elasto-Visco-Plastic Buckling of Thick Shell [Jacquet et al. 2021]
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
  • Explosion tests carried out at the DGA TN Tourris site
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • Load passage for a rough contact on a granular mass and illustration of the maximum shear stress
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • <a href='./files/apercu_deroulant/pdf/11_EN.pdf'>'Measurement' of pressure spike & lubricant rheology</a>
  • Stress at the root of a spiral bevel gear
  • <a href='./files/apercu_deroulant/pdf/13_EN.pdf'>Pressure distribution between an oil control ring and a textured liner</a>
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • Pressure perturbations due to an indent crossing a contact
  • Contact spalling
  • 3D discrete simulation of wear flow in dry contact
  • 2dof electromagnetic generator for railway applications
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
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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
  • A physically based Proper Orthogonal Decomposition for structural mechanics involving dissipative processes
    By : Lucarelli, L. Cimatti, Blal, N., Platzer, A., Gravouil, A., Iampietro, D.
    FINITE ELEMENTS IN ANALYSIS AND DESIGN - Published : SEP 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
  • On-the-fly adaptive sampling strategy for data-driven computational mechanics: Applications to computational homogenisation
    By : Rocha, Felipe, Platzer, Auriane, Leygue, Adrien, Stainier, Laurent
    MECHANICS OF MATERIALS - Published : AUG 2025
  • Numerical and Experimental Investigation of Rubbing Existence in the Context of a Rotating Machine Under Base Excitation
    By : Sousa Jr, Marcelo Samora, Cavallini Jr, Aldemir Ap., Steffen Jr, Valder, Briend, Yvon, Chatelet, Eric, Dufour, Regis
    JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME - Published : AUG 1 2025
  • New methodology for adaptive sliding mode control with self-tuning threshold based on chattering detection
    By : Rodriguez, Jonathan, Lechappe, Vincent, Chesne, Simon
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Published : JUL 15 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
  • Identification of key parameter influence on efficiency of chain drive for track cycling - Preliminary results
    By : Lanaspeze, Gabriel, Best, Martin, Guilbert, Berengere, Cavoret, Jerome, Duval, Arnaud, Manin, Lionel, Ville, Fabrice
    MECHANICS & INDUSTRY - Published : JUN 9 2025

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