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

  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • Active control of embedded electronic cards
  • Tactile perception
  • Distributed piezoelectric sensors for boundary forces measurements
  • Simulation of rolling contact on an elastic-plastic heterogeneous mass
  • Diagnostic and monitoring of rotating parts in vehicles
  • 2dof electromagnetic generator for railway applications
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
  • Study of losses in transmission belts
  • Package drop test: forces on the protected object and energy distribution
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • Finite element simulation of the ballooning of a Zircaloy-4 sheath under conditions simulating a LOCA. Several physics involved, including elasto-v...
  • Nonlinear vibrations of M/NEMS resonant sensors
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Equipex Phare
  • Rotating machine on active magnetic bearings
  • Molecular Dynamics simulation of ZDDP effects on friction in nano-scale lubricated contacts
  • Silent wheel: Identification and control
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • Advanced Chebyshev expansion for identification on continuous structures
  • Hybrid vibration control
  • <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)
  • Boundary layer in an EHL contact
  • <a href='./files/apercu_deroulant/pdf/10_EN.pdf'>Efficient multigrid FE solver</a>
  • Contact spalling
  • Stress at the root of a spiral bevel gear
  • Flange roller-end contact: numerical (FEM) vs experimental (interferometry) values of the lubricant film thickness (Trybogyr)
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • Thermal memory effect
  • Rotor demonstrator on PMA
  • Hybrid vibration control
  • Pressure perturbations due to an indent crossing a contact
  • Visco-elastic contact
  • Lipid structures of synovial fluid in healthy and arterial cases
  • <a href='./files/apercu_deroulant/pdf/11_EN.pdf'>'Measurement' of pressure spike & lubricant rheology</a>
  • Adhesive contact
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • Control of rotating machinery supported by Active Magnetic Bearings (AMB)
  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Bio-tribology for the prevention, diagnosis and early treatment of pathologies
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Velocity vectors in a carotid artery in healthy and pathological cases
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Explosion tests carried out at the DGA TN Tourris site
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
  • Validation of the hybrid modular model: Comparison of tooth pressure with an EF model for thin-walled gears (source: CIFRE Safran Helicopter Engine...
  • Load passage for a rough contact on a granular mass and illustration of the maximum shear stress
  • 3D discrete simulation of wear flow in dry contact
  • Elasto-Visco-Plastic Buckling of Thick Shell [Jacquet et al. 2021]
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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
  • 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
  • Influence of symmetry breaking on the multi-stable responses of a vibro-impact system: Experimental and numerical investigation
    By : Zuniga, Pau Becerra, Baguet, Sebastien, Prabel, Benoit, Grenat, Clement, Dufour, Regis
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Published : MAR 1 2025
  • An ultra-sensitive diamagnetic levitation accelerometer with quasi-zero-stiffness structure
    By : Wang, Yang, Xu, Yuanping, Yang, Lu, Zhou, Jin, Mahfoud, Jarir, Jin, Chaowu
    MEASUREMENT - Published : MAR 15 2025
  • Development of decision support tools by model order reduction for active endovascular navigation
    By : Badrou, Arif, Duval, Arnaud, Szewczyk, Jerome, Blanc, Raphael, Tardif, Nicolas, Hamila, Nahiene, Gravouil, Anthony, Bel-Brunon, Aline
    ARTIFICIAL INTELLIGENCE IN MEDICINE - Published : MAR 2025
  • Analysis of stress intensity factor oscillations in 3D cracks using domain integrals and the extended finite element method
    By : Gonzalez-Albuixech, Vicente F., Giner, Eugenio, Gravouil, Anthony
    COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING - Published : MAR 1 2025
  • Chemo-Enzymatic Synthesis of Mixed Docosahexaenoic Acid Phosphatidylcholine Conjugates
    By : Lehoux, Jordan, Grosjean, Felix, Lobo, Alexandre, Lagarde, Michel, Bernoud-Hubac, Nathalie, Durand, Thierry, Crauste, Celine
    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY - Published : MAR 5 2025
  • Green-FFT model for 3D contacts considering microstructure and defects
    By : Fourel, Lucas, Noyel, Jean-Philippe, Kleber, Xavier, Sainsot, Philippe, Ville, Fabrice
    MECHANICS & INDUSTRY - Published : MAR 12 2025

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