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

  • Adhesive contact
  • <a href='./files/apercu_deroulant/pdf/10_EN.pdf'>Efficient multigrid FE solver</a>
  • Flange roller-end contact: numerical (FEM) vs experimental (interferometry) values of the lubricant film thickness (Trybogyr)
  • Contact spalling
  • 3D discrete simulation of wear flow in dry contact
  • Hybrid vibration control
  • Rotating machine on active magnetic bearings
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • Distributed piezoelectric sensors for boundary forces measurements
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • Boundary layer in an EHL contact
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Load passage for a rough contact on a granular mass and illustration of the maximum shear stress
  • Molecular Dynamics simulation of ZDDP effects on friction in nano-scale lubricated contacts
  • Thermal memory effect
  • Finite element simulation of the ballooning of a Zircaloy-4 sheath under conditions simulating a LOCA. Several physics involved, including elasto-v...
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Control of rotating machinery supported by Active Magnetic Bearings (AMB)
  • Rotor demonstrator on PMA
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • Package drop test: forces on the protected object and energy distribution
  • <a href='./files/apercu_deroulant/pdf/11_EN.pdf'>'Measurement' of pressure spike & lubricant rheology</a>
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • Pressure perturbations due to an indent crossing a contact
  • Diagnostic and monitoring of rotating parts in vehicles
  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • Lipid structures of synovial fluid in healthy and arterial cases
  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • Elasto-Visco-Plastic Buckling of Thick Shell [Jacquet et al. 2021]
  • Silent wheel: Identification and control
  • Visco-elastic contact
  • <a href='./files/apercu_deroulant/pdf/13_EN.pdf'>Pressure distribution between an oil control ring and a textured liner</a>
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • 2dof electromagnetic generator for railway applications
  • Hybrid vibration control
  • Equipex Phare
  • Velocity vectors in a carotid artery in healthy and pathological cases
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • 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)
  • Active control of embedded electronic cards
  • Nonlinear vibrations of M/NEMS resonant sensors
  • Explosion tests carried out at the DGA TN Tourris site
  • Study of losses in transmission belts
  • Stress at the root of a spiral bevel gear
  • Bio-tribology for the prevention, diagnosis and early treatment of pathologies
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Study of plasticization in a micro-pillar of pure silica
  • Validation of the hybrid modular model: Comparison of tooth pressure with an EF model for thin-walled gears (source: CIFRE Safran Helicopter Engine...
  • Advanced Chebyshev expansion for identification on continuous structures
  • LaMCoS 's DataCenter
  • Tactile perception
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
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The last 10 publications of the laboratory

  • 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
  • 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
  • Experimental analysis of the forming behavior of uni- and bidirectional non-crimp fabrics for different geometries
    By : Schaefer, Bastian, Zheng, Ruochen, Colmars, Julien, Platzer, Auriane, Naouar, Naim, Boisse, Philippe, Kaerger, Luise
    COMPOSITES PART B-ENGINEERING - Published : DEC 2024
  • Extended crack propagation in nitrided and carburised steels subject to rolling contact fatigue
    By : Lecouffe, A., Kleber, X., Ville, F., Cavoret, J., Zamponi, L., Ruellan, A.
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY - Published : DEC 2024

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