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

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

  • Bichromatic melt pool thermal measurement based on a Red, Green, and Blue camera: Application to additive manufacturing processes
    By : Jegou, Loic, Lachambre, Joel, Tardif, Nicolas, Guillemot, Mady, Dellarre, Anthony, Zaoui, Abderrahime, Elguedj, Thomas, Kaftandjian, Valerie, Beraud, Nicolas
    OPTICS AND LASER TECHNOLOGY - Published : DEC 2023
  • Advanced analysis of the bias-extension of woven fabrics with X-ray microtomography and Digital Volume Correlation
    By : Stamati, O., Orgeas, L., du Roscoat, S. Rolland, Lhuissier, P., Dumont, P. J. J., Martoia, F.
    COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING - Published : DEC 2023
  • Modelling of fracture strength and toughness of 2D and 3D composites
    By : Yang, Bo, Su, Yang, Wei, Qiang, Li, Zongze, Fourmeau, Marion, Zhao, Libin, Huang, Cheng, Hu, Ning, Nelias, Daniel
    INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES - Published : NOV 15 2023
  • Adaptive mesh refinement and cycle jumps for phase-field fatigue fracture modeling
    By : Jaccon, Adrien, Prabel, Benoit, Molnar, Gergely, Bluthe, Joffrey, Gravouil, Anthony
    FINITE ELEMENTS IN ANALYSIS AND DESIGN - Published : OCT 15 2023
  • Numerical homogenization of fiber reinforced layer in large elastic deformation using a decoupled iterative method
    By : Karoui, S., Mansouri, K., Renard, Y., Arfaoui, M., Homolle, T., Bussetta, P.
    COMPOSITE STRUCTURES - Published : OCT 15 2023
  • Research on mechanism of enhancing lubrication flow field regulation of high-speed bearing functional cage
    By : Wei, Chunhui, Wu, Wei, Hou, Xiaonan, Nelias, Daniel, Yuan, Shihua
    TRIBOLOGY INTERNATIONAL - Published : OCT 2023
  • Piston Ring Mixed Lubrication Model Including Real Geometry Using Analytical Correction Coefficients: Theory and Experimental Validation
    By : Lubrecht, T., Biboulet, N., Dufils, J., Lubrecht, A. A.
    TRIBOLOGY LETTERS - Published : SEP 2023
  • Roughness and wettability control of soda-lime silica glass surfaces by femtosecond laser texturing and curing environments
    By : Ouchene, Anis, Mollon, Guilhem, Ollivier, Maelig, Sedao, Xxx, Pascale-Hamri, Alina, Dumazer, Guillaume, Serris, Eric
    APPLIED SURFACE SCIENCE - Published : SEP 1 2023
  • Creep-fatigue mechanical characteristics of salt rocks under triaxial loading: An experimental study
    By : Li, Zongze, Kang, Yanfei, Fan, Jinyang, Fourmeau, Marion, Jiang, Deyi, Nelias, Daniel
    ENGINEERING GEOLOGY - Published : SEP 5 2023
  • A cheap preconditioner based on fast diagonalization method for matrix-free weighted-quadrature isogeometric analysis applied to nonlinear transient heat transfer problems
    By : Fuentes, Joaquin Cornejo, Elguedj, Thomas, Dureisseix, David, Duval, Arnaud
    COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING - Published : SEP 1 2023