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

  • Influence of in-plane bending behaviour on textile composite reinforcement forming
    By : Bai, R., Guzman-Maldonado, E., Zheng, R., Colmars, J.
    INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES - Published : JUL 1 2024
  • Experimental investigation on brake squeal unpredictability: Role of the friction noise
    By : Ciprari, S., Tonazzi, D., Ripard, V., Saulot, A., Massi, F.
    TRIBOLOGY INTERNATIONAL - Published : JUL 2024
  • The tire-road contact: A mechanical mixing seen as a shear-induced diffusive process
    By : Daigne, Kevin, Mollon, Guilhem, Descartes, Sylvie, Fillot, Nicolas, Jeanneret-Dit-Grosjean, Romain, Biesse, Frederic, Perriot, Antoine
    WEAR - Published : JUN 1 2024
  • Aortic roadmapping during EVAR: a combined FEM-EM tracking feasibility study
    By : Emendi, Monica, Tangen, Geir A., Di Giovanni, Pierluigi, Ulsaker, Havard, Brekken, Reidar, Manstad-Hulaas, Frode, Prot, Victorien, Bel-Brunon, Aline, Stoverud, Karen H.
    INTERNATIONAL JOURNAL OF COMPUTER ASSISTED RADIOLOGY AND SURGERY - Published : JUN 2 2024
  • 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
  • A thermodynamic motivated RCCM damage interface model in an explicit transient dynamics framework
    By : Larousse, Paul, Dureisseix, David, Gravouil, Anthony, Georges, Gabriel
    COMPUTATIONAL MECHANICS - Published : MAY 10 2024