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

  • Load passage for a rough contact on a granular mass and illustration of the maximum shear stress
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • Rotating machine on active magnetic bearings
  • Pressure perturbations due to an indent crossing a contact
  • Active control of embedded electronic cards
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Hybrid vibration control
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • Distributed piezoelectric sensors for boundary forces measurements
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
  • Lipid structures of synovial fluid in healthy and arterial cases
  • Silent wheel: Identification and control
  • Diagnostic and monitoring of rotating parts in vehicles
  • Flange roller-end contact: numerical (FEM) vs experimental (interferometry) values of the lubricant film thickness (Trybogyr)
  • <a href='./files/apercu_deroulant/pdf/13_EN.pdf'>Pressure distribution between an oil control ring and a textured liner</a>
  • Boundary layer in an EHL contact
  • 2dof electromagnetic generator for railway applications
  • Stress at the root of a spiral bevel gear
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Hybrid vibration control
  • <a href='./files/apercu_deroulant/pdf/10_EN.pdf'>Efficient multigrid FE solver</a>
  • Adhesive contact
  • Simulation of rolling contact on an elastic-plastic heterogeneous mass
  • Equipex Phare
  • Explosion tests carried out at the DGA TN Tourris site
  • Study of losses in transmission belts
  • Molecular Dynamics simulation of ZDDP effects on friction in nano-scale lubricated contacts
  • 3D discrete simulation of wear flow in dry contact
  • Tactile perception
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
  • Rotor demonstrator on PMA
  • Package drop test: forces on the protected object and energy distribution
  • 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)
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Thermal memory effect
  • Advanced Chebyshev expansion for identification on continuous structures
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • Nonlinear vibrations of M/NEMS resonant sensors
  • Finite element simulation of the ballooning of a Zircaloy-4 sheath under conditions simulating a LOCA. Several physics involved, including elasto-v...
  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • Elasto-Visco-Plastic Buckling of Thick Shell [Jacquet et al. 2021]
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Contact spalling
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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
  • Using indentation to identify the parameters of a numerical third-body model: Application to a rubber-like material
    By : Daigne, Kevin, Mollon, Guilhem, Descartes, Sylvie, Fillot, Nicolas, Baral, Paul, Jeanneret-Dit-Grosjean, Romain, Biesse, Frederic, Perriot, Antoine, Maurel, Gaetan
    TRIBOLOGY INTERNATIONAL - Published : DEC 2025
  • Coupled effect of viscoelasticity and roughness scales on hysteretic friction in sliding periodic contact
    By : Durand, Nicolas, Platzer, Auriane, Duval, Arnaud, Nelias, Daniel, Chaise, Thibaut
    JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS - 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
  • Smart Electromagnetic Inerter-Based Vibration Absorber With Active Control for Enhanced Stability
    By : Mesny, Louis, Paixao, Jesse, Peyrouse, Floriane, Alujevic, Neven, Collette, Christophe, Chesne, Simon
    JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME - Published : OCT 1 2025
  • A new formulation for convective heat transfer in oil jet lubricated spur gears
    By : Torres, Thibaut, Changenet, Christophe, Touret, Thomas, Guilbert, Berengere
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY - Published : SEP 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

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