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

  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • Flange roller-end contact: numerical (FEM) vs experimental (interferometry) values of the lubricant film thickness (Trybogyr)
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • Nonlinear vibrations of M/NEMS resonant sensors
  • <a href='./files/apercu_deroulant/pdf/10_EN.pdf'>Efficient multigrid FE solver</a>
  • Stress at the root of a spiral bevel gear
  • Active control of embedded electronic cards
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Equipex Phare
  • Hybrid vibration control
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Visco-elastic contact
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Validation of the hybrid modular model: Comparison of tooth pressure with an EF model for thin-walled gears (source: CIFRE Safran Helicopter Engine...
  • Diagnostic and monitoring of rotating parts in vehicles
  • Rotor demonstrator on PMA
  • Hybrid vibration control
  • Boundary layer in an EHL contact
  • Tactile perception
  • Simulation of rolling contact on an elastic-plastic heterogeneous mass
  • Molecular Dynamics simulation of ZDDP effects on friction in nano-scale lubricated contacts
  • Advanced Chebyshev expansion for identification on continuous structures
  • 2dof electromagnetic generator for railway applications
  • Adhesive contact
  • Control of rotating machinery supported by Active Magnetic Bearings (AMB)
  • Distributed piezoelectric sensors for boundary forces measurements
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Contact spalling
  • Elasto-Visco-Plastic Buckling of Thick Shell [Jacquet et al. 2021]
  • 3D discrete simulation of wear flow in dry contact
  • Finite element simulation of the ballooning of a Zircaloy-4 sheath under conditions simulating a LOCA. Several physics involved, including elasto-v...
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • Rotating machine on active magnetic bearings
  • Pressure perturbations due to an indent crossing a contact
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
  • Lipid structures of synovial fluid in healthy and arterial cases
  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • Load passage for a rough contact on a granular mass and illustration of the maximum shear stress
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • Silent wheel: Identification and control
  • Thermal memory effect
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • Study of losses in transmission belts
  • Package drop test: forces on the protected object and energy distribution
  • <a href='./files/apercu_deroulant/pdf/13_EN.pdf'>Pressure distribution between an oil control ring and a textured liner</a>
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
  • Explosion tests carried out at the DGA TN Tourris site
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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
  • Soft generators for roadway energy harvesting: a preliminary study on design and fabrication of stacked integrated dielectric elastomer architectures using liquid silicone rubber composites
    By : Boccalero, Gregorio, He, Delong, Bai, Jinbo, Chesne, Simon, Yonnet, Jean-Paul, Sylvestre, Alain
    ELECTROACTIVE POLYMER ACTUATORS, SENSORS, AND DEVICES, EAPAD 2025 - 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
  • FEM approximation of dynamic contact problem for fracture under fluid volume control using generalized HHT-α and semi-smooth Newton methods
    By : Kovtunenko, Victor A., Renard, Yves
    APPLIED NUMERICAL MATHEMATICS - Published : DEC 2025
  • A thermodynamically based explicit transient dynamics framework for large transformation contact problems
    By : Larousse, Paul, Dureisseix, David, Gravouil, Anthony, Di Stasio, Jean
    FINITE ELEMENTS IN ANALYSIS AND DESIGN - Published : OCT 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
  • Stability analysis of compressed air energy storage in underground space: A comparative research of coal mine roadway and salt cavern
    By : Fan, Jinyang, Guo, Pengyu, Wang, Yifan, Li, Zongze, Zou, Yang, Jiang, Deyi, Nelias, Daniel
    GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT - Published : SEP 2025
  • Physicochemical characterization of brake abrasion particles from trucks under laboratory conditions
    By : Mirailler, Alice, Trunfio-Sfarghiu, Ana-Maria, Massardier, Valentin, Lazar, Adina-Nicoleta, Bernoud-Hubac, Nathalie, Catinon, Mickael, Schroder, Andre Pierre, Khardi, Salah
    TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT - Published : SEP 2025
  • Treatment by Preplanned Virtual Autotransplantation of a Microdont Immature Third Molar to a Maxillary Central Incisor Socket Using a 3D Printed Tooth Replica: A Case Report
    By : Barraco, Aurore, Marcoux, Clara, Richert, Raphael, Ligerot, Romain, Gritsch, Kerstin, Lafon, Arnaud
    DENTAL TRAUMATOLOGY - Published : AUG 2025
  • Data-driven identification-free approach for nonlinear structural dynamics
    By : Paixao, Jesse, Platzer, Auriane, Rodriguez, Jonathan, Mesny, Louis, Blal, Nawfal, Baguet, Sebastien
    NONLINEAR DYNAMICS - Published : AUG 2025

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