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

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

  • Numerical and experimental characterization of high-temperature heat transfer in a ceramic foam with dual-scale porosity
    By : Low, Z. K., Blal, N., Baillis, D.
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER - Published : MAY 1 2024
  • Numerical continuation and stability of nonlinear systems with distributed delays: Application to fluid-induced impacts of tubes in cross-flow
    By : Alcorta, Roberto, Prabel, Benoit, Baguet, Sebastien, Piteau, Philipe
    INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS - Published : MAY 2024
  • Can machine learning predict friction from third body morphology?
    By : Bouchot, Alizee, Ferrieux, Amandine, Debayle, Johan, Mollon, Guilhem, Descartes, Sylvie
    TRIBOLOGY INTERNATIONAL - Published : MAY 2024
  • An Original Methodology to Model Stationary and Transient Starvation in Elastohydrodynamic Lubrication Contact
    By : Decote, M., Fillot, N., Maheo, Y., Morales-Espejel, G. E.
    JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME - Published : MAY 1 2024
  • Nonlinear vibration of a sliding-mode-controlled structure: Simulation and experiment
    By : Mesny, L., Baguet, S., Chesne, S.
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Published : APR 1 2024
  • Sliding Mode Control for Hybrid Mass Dampers: Experimental analysis on robustness
    By : Rodriguez, Jonathan, Mesny, Louis, Chesne, Simon
    JOURNAL OF SOUND AND VIBRATION - Published : APR 14 2024
  • In-situ ultrasonic viscometry of lubricants under temperature and shear
    By : Peretti, G., Bouscharain, N., Dorr, N., Ville, F., Dwyer-Joyce, R. S.
    TRIBOLOGY INTERNATIONAL - Published : MAR 2024
  • Influence of a transmission oil degradation on physico-chemical properties and tribological performance
    By : Duran, Busra, Cavoret, Jerome, Philippon, David, Ville, Fabrice, Ruellan, Arnaud, Berens, Frank
    TRIBOLOGY INTERNATIONAL - Published : MAR 2024
  • Modeling and experimental identification of thermo-kinetic and visco-hyperelastic coupling for semicrystalline thermoplastic continuous fiber composites subjected to processing temperatures
    By : Bigot, Nicolas, Hamila, Nahiene, Chaudet, Philippe, Xin, Shihe, Boutaous, M'hamed
    COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING - Published : MAR 2024
  • Nonlinear dynamics of a rotor supported by hydrodynamic bearings and ball bearings with loose fit when passing through a critical speed
    By : Briend, Yvon, Chatelet, Eric, Dufour, Regis, Andrianoely, Marie-Ange, Legrand, Franck, Fiore, Giuseppe, Pampolini, Giampiero
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Published : MAR 15 2024

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