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

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