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

  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • Control of rotating machinery supported by Active Magnetic Bearings (AMB)
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • Flange roller-end contact: numerical (FEM) vs experimental (interferometry) values of the lubricant film thickness (Trybogyr)
  • Molecular Dynamics simulation of ZDDP effects on friction in nano-scale lubricated contacts
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Hybrid vibration control
  • Hybrid vibration control
  • Lipid structures of synovial fluid in healthy and arterial cases
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • 2dof electromagnetic generator for railway applications
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • Distributed piezoelectric sensors for boundary forces measurements
  • Nonlinear vibrations of M/NEMS resonant sensors
  • Silent wheel: Identification and control
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
  • Rotor demonstrator on PMA
  • Visco-elastic contact
  • Study of losses in transmission belts
  • LaMCoS 's DataCenter
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • Bio-tribology for the prevention, diagnosis and early treatment of pathologies
  • Diagnostic and monitoring of rotating parts in vehicles
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Active control of embedded electronic cards
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Simulation of rolling contact on an elastic-plastic heterogeneous mass
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Validation of the hybrid modular model: Comparison of tooth pressure with an EF model for thin-walled gears (source: CIFRE Safran Helicopter Engine...
  • Elasto-Visco-Plastic Buckling of Thick Shell [Jacquet et al. 2021]
  • Thermal memory effect
  • <a href='./files/apercu_deroulant/pdf/10_EN.pdf'>Efficient multigrid FE solver</a>
  • Load passage for a rough contact on a granular mass and illustration of the maximum shear stress
  • <a href='./files/apercu_deroulant/pdf/11_EN.pdf'>'Measurement' of pressure spike & lubricant rheology</a>
  • <a href='./files/apercu_deroulant/pdf/13_EN.pdf'>Pressure distribution between an oil control ring and a textured liner</a>
  • Equipex Phare
  • Velocity vectors in a carotid artery in healthy and pathological cases
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • 3D discrete simulation of wear flow in dry contact
  • Rotating machine on active magnetic bearings
  • Advanced Chebyshev expansion for identification on continuous structures
  • Pressure perturbations due to an indent crossing a 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)
  • Boundary layer in an EHL contact
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
  • Explosion tests carried out at the DGA TN Tourris site
  • Tactile perception
  • Contact spalling
  • Package drop test: forces on the protected object and energy distribution
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Stress at the root of a spiral bevel gear
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • Adhesive contact
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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
  • 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
  • Enhanced Cement Foam Composite with Biochar for Eriochrome Black T Dye Removal
    By : Boussalah, Mohammed Ettahar, Medjahdi, Malika, Guella, Sofiane, Baillis, Dominique
    MATERIALS - Published : MAR 2025

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