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

  • Nonlinear vibrations of M/NEMS resonant sensors
  • Tribological study of a bolted interface subjected to vibration: micro-slip and micro-detachment measured by image correlation
  • Nonlinear dynamics of on-board structure equipped with elastomer mounts
  • Validation of the hybrid modular model: Comparison of tooth pressure with an EF model for thin-walled gears (source: CIFRE Safran Helicopter Engine...
  • Active control of embedded electronic cards
  • Rotating machine on active magnetic bearings
  • Deformations of the vascular structure under the effect of inserted tools (M. Menut PhD)
  • Shear angles during thermoforming of thermoplastic prepregs Experimental-simulation comparisons
  • Stress at the root of a spiral bevel gear
  • Velocity vectors in a carotid artery in healthy and pathological cases
  • Control of rotating machinery supported by Active Magnetic Bearings (AMB)
  • <a href='./files/apercu_deroulant/pdf/10_EN.pdf'>Efficient multigrid FE solver</a>
  • Finite element simulation of the ballooning of a Zircaloy-4 sheath under conditions simulating a LOCA. Several physics involved, including elasto-v...
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Explosion tests carried out at the DGA TN Tourris site
  • Distributed piezoelectric sensors for boundary forces measurements
  • Silent wheel: Identification and control
  • Monitoring of Rotating Machines in evolving and unstable environnement: Application to wind turbines
  • 2dof electromagnetic generator for railway applications
  • Study of plasticization in a micro-pillar of pure silica
  • 3D discrete simulation of wear flow in dry contact
  • Equipex Phare
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Hybrid vibration control
  • LaMCoS 's DataCenter
  • Bio-tribology for the prevention, diagnosis and early treatment of pathologies
  • Original electrical application architecture with strong electro-magnetic-mechanical coupling (© Leroy-Somer)
  • Lipid structures of synovial fluid in healthy and arterial cases
  • Tactile perception
  • <a href='./files/apercu_deroulant/pdf/12_EN.pdf'>Textured cylinder-liner surface</a>
  • Adhesive contact
  • Boundary layer in an EHL contact
  • <a href='./files/apercu_deroulant/pdf/11_EN.pdf'>'Measurement' of pressure spike & lubricant rheology</a>
  • Thermal memory effect
  • Mesoscopic analysis of the compaction of a 3D reinforcement Experimental-simulation comparisons
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • Contact spalling
  • Visco-elastic contact
  • Understanding the early detection of bearing defects in non-stationary conditions
  • Phonons in a nanocomposite with different elastic contrasts simulated by Finite Elements
  • Example of a multiparametric digital twin for welding (PhD by Y. LU, AREVA-SAFRAN-LAMCOS Chair)
  • <a href='./files/apercu_deroulant/pdf/13_EN.pdf'>Pressure distribution between an oil control ring and a textured liner</a>
  • Rotor demonstrator on PMA
  • Simulation of rolling contact on an elastic-plastic heterogeneous mass
  • Package drop test: forces on the protected object and energy distribution
  • Diagnostic and monitoring of rotating parts in vehicles
  • Elasto-Visco-Plastic Buckling of Thick Shell [Jacquet et al. 2021]
  • Advanced Chebyshev expansion for identification on continuous structures
  • Hybrid vibration control
  • Optimisation of the shape and position of the ribs of an aircraft wing loaded in bending at constant mass. Compliance reduced by 80%
  • Explicit-implicit co-simulation (Zebulon / Europlexus)
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
  • Equivalent stress field generated by a rolling contact on a heterogeneous viscoelastic mass
  • Load passage for a rough contact on a granular mass and illustration of the maximum shear stress
  • Multiscale topological optimisation (PhD by T.Djourachkovitch)
  • Pressure perturbations due to an indent crossing a contact
  • Study of losses in transmission belts
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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
  • Experimental study on fatigue failure properties of mudstone interlayers under discontinuous loading in salt cavern gas storage
    By : Suo, Jinjie, Fan, Jinyang, Jiang, Deyi, Li, Zongze, Fourmeau, Marion, Chen, Jie, Yang, Zhenyu, Nelias, Daniel
    ENGINEERING FAILURE ANALYSIS - Published : MAY 2024
  • Energy Transfer in Mixed Lanthanides Complexes: Toward High-Performance Pressure Sensors Based on the Luminescence Intensity Ratio
    By : Zhou, Yujiao, Ledoux, Gilles, Bois, Laurence, Pilet, Guillaume, Colombo, Margherita, Jeanneau, Erwann, Lafarge, Lionel, Journet, Catherine, Descartes, Sylvie, Philippon, David
    ADVANCED OPTICAL MATERIALS - Published : APR 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
  • Artificial intelligence and smile design: An e-Delphi consensus statement of ethical challenges
    By : Rokhshad, Rata, Karteva, Teodora, Chaurasia, Akhilanand, Richert, Raphael, Morch, Carl-Maria, Tamimi, Faleh, Ducret, Maxime
    JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY - Published : APR 24 2024
  • Crack roughness of high-speed fracture in brittle single crystalline material
    By : Wang, Meng, Zhao, Lv, Fourmeau, Marion, Nelias, Daniel, Li, Zhenhuan
    INTERNATIONAL JOURNAL OF FRACTURE - Published : MAR 2024