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

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

  • Experimental evaluation of multiaxial test-tailored specifications based on Fatigue Damage multi-Spectra
    By : Aime, M., Banvillet, A., Khalij, L., Pagnacco, E., Chatelet, E., Dufour, R.
    INTERNATIONAL JOURNAL OF FATIGUE - Published : FEB 2025
  • Vibration attenuation of dual periodic pipelines using interconnected vibration absorbers
    By : Iqbal, Mohd, Jaya, Mahesh Murugan, Savadkoohi, Alireza Ture, Baguet, Sebastien
    ENGINEERING STRUCTURES - Published : JAN 1 2025
  • Numerical and experimental investigations on the dynamic behavior of a rotor-AMBs system considering shrink-fit assembly
    By : Zhou, Yang, Xu, Yuanping, Zhou, Jin, Zhang, Yue, Mahfoud, Jarir
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Published : JAN 1 2025
  • Stochastic optimization of a mass-in-mass cell with piecewise hybrid nonlinear-linear restoring force
    By : Zanin, C. da Silveira, Missoum, S., Savadkoohi, A. Ture, Baguet, S., Gourdon, E., Dufour, R.
    JOURNAL OF SOUND AND VIBRATION - Published : JAN 20 2025
  • A solid-beam approach for mesoscopic analysis of textile reinforcements forming simulation
    By : Lacroix, Baptiste, Colmars, Julien, Platzer, Auriane, Naouar, Naim, Vidal-Salle, Emmanuelle, Boisse, Philippe
    MATERIAL FORMING, ESAFORM 2024 - Published : 2024
  • Draping of biaxial non-crimp fabric on hemispherical shape
    By : Zheng Ruochen, Naouar, Naim, Schaefer, Bastian, Platzer, Auriane, Colmars, Julien, Kaerger, Luise, Boisse, Philippe
    MATERIAL FORMING, ESAFORM 2024 - Published : 2024
  • Investigation of the friction behavior of uni- and bidirectional non-crimp fabrics
    By : Schafer, Bastian, Naouar, Naim, Karger, Luise
    MATERIAL FORMING, ESAFORM 2024 - Published : 2024
  • Energy Exchanges in a Nonlinear Meta-Cell
    By : Zanin, Camila da Silveira, Savadkoohi, Alireza Ture, Baguet, Sebastien, Dufour, Regis
    PERSPECTIVES IN DYNAMICAL SYSTEMS I-APPLICATIONS, DSTA 2021 - Published : 2024
  • Dynamic Analysis of a Tactile Device for Mimicking Mechanical Stimuli Responsible for Texture Perception
    By : Felicetti, Livia, Chatelet, Eric, Massi, Francesco
    SPECIAL TOPICS IN STRUCTURAL DYNAMICS & EXPERIMENTAL TECHNIQUES, VOL 5 - Published : 2024
  • Tooth friction in spur gear transmission. From local to mean tooth friction loss
    By : Diab, Yasser, Touret, Thomas, Ville, Fabrice, Changenet, Christophe
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY - Published : DEC 2024

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