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

  • Equipex Phare
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • Adhesive contact
  • <a href='./files/apercu_deroulant/pdf/13_EN.pdf'>Pressure distribution between an oil control ring and a textured liner</a>
  • Rotating machine on active magnetic bearings
  • Distributed piezoelectric sensors for boundary forces measurements
  • Active control of embedded electronic cards
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
  • Hybrid vibration control
  • <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
  • Explosion tests carried out at the DGA TN Tourris site
  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • Advanced Chebyshev expansion for identification on continuous structures
  • 2dof electromagnetic generator for railway applications
  • Thermal memory effect
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Molecular Dynamics simulation of ZDDP effects on friction in nano-scale lubricated contacts
  • Nonlinear vibrations of M/NEMS resonant sensors
  • Simulation of rolling contact on an elastic-plastic heterogeneous mass
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Lipid structures of synovial fluid in healthy and arterial cases
  • Tactile perception
  • Hybrid vibration control
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • Silent wheel: Identification and control
  • Flange roller-end contact: numerical (FEM) vs experimental (interferometry) values of the lubricant film thickness (Trybogyr)
  • Study of losses in transmission belts
  • Velocity vectors in a carotid artery in healthy and pathological cases
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • 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]
  • Bio-tribology for the prevention, diagnosis and early treatment of pathologies
  • Stress at the root of a spiral bevel gear
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • LaMCoS 's DataCenter
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • Control of rotating machinery supported by Active Magnetic Bearings (AMB)
  • Visco-elastic contact
  • Finite element simulation of the ballooning of a Zircaloy-4 sheath under conditions simulating a LOCA. Several physics involved, including elasto-v...
  • 3D discrete simulation of wear flow in dry contact
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • Contact spalling
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • <a href='./files/apercu_deroulant/pdf/11_EN.pdf'>'Measurement' of pressure spike & lubricant rheology</a>
  • Rotor demonstrator on PMA
  • Package drop test: forces on the protected object and energy distribution
  • Study of plasticization in a micro-pillar of pure silica
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
  • Boundary layer in an EHL contact
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
  • Pressure perturbations due to an indent crossing a contact
  • Diagnostic and monitoring of rotating parts in vehicles
carousel jquery by WOWSlider.com v8.8m


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

LaMCoS in videos