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

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

  • A round-robin study on the tensile characterization of single fibres: A multifactorial analysis and recommendations for more reliable results
    By : Jeannin, Thomas, Arnold, Gilles, Bourmaud, Alain, Corn, Stephane, De Luycker, Emmanuel, Dumont, Pierre J. J., Ferreira, Manuela, Gr, Marie, Harzallah, Omar, Heurtel, Julie, Kervoelen, Antoine, Labanieh, Ahmad Rashed, Le Moigne, Nicolas, Martoia, Florian, Org, Laurent, Ouagne, Pierre, Soulat, Damien, Vivet, Alexandre, Placet, Vincet
    COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING - Published : OCT 2024
  • Friction mechanisms of Ni-based and Zr-based bulk metallic glasses under different contact pressures
    By : Zhou, Zhijian, Albahrani, Sayed, Ren, Yue, Daudin, Remi, Lafarge, Lionel, Ollier, Nadege, Homeyer, Estelle, Saulot, Aurelien, Descartes, Sylvie, Tanguy, Anne
    TRIBOLOGY INTERNATIONAL - Published : SEP 2024
  • Fluid film effect on the motion of an externally excited loosely supported tubular structure
    By : Delli Colli, Matteo, Bou-Said, Benyebka, Descartes, Sylvie, Falcand, Carole, Marouf, Nabil, Massi, Francesco
    TRIBOLOGY INTERNATIONAL - Published : SEP 2024
  • Wear in Progress: How Third Body Flow Controls Surface Damage
    By : Bouillanne, Olivier, Mollon, Guilhem, Saulot, Aurelien, Descartes, Sylvie, Serres, Nathalie, Chassaing, Guillaume, Demmou, Karim
    TRIBOLOGY LETTERS - Published : SEP 2024
  • Numerical and experimental investigations on the influence factors of diamagnetic levitated electrostatic motor
    By : Xu, Yuanping, Ling, Riwang, Mahfoud, Jarir, Yang, Lu, Zhou, Jin
    JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING - Published : AUG 2024
  • Next generation antibacterial strategies for regenerative endodontic procedures: A scoping review
    By : Leveque, Marianne, Guittat, Marie, Thivichon-Prince, Beatrice, Reuzeau, Alicia, Eveillard, Matthieu, Faure, Marjorie, Farges, Jean-Christophe, Richert, Raphael, Bekhouche, Mourad, Ducret, Maxime
    INTERNATIONAL ENDODONTIC JOURNAL - Published : JUL 2024
  • Investigation of the early apical release from endodontic hydrogels: A 3D printed model
    By : Leveque, Marianne, Bekhouche, Mourad, Farges, Jean-Christophe, Richert, Raphael, Ducret, Maxime
    INTERNATIONAL ENDODONTIC JOURNAL - Published : JUL 2024
  • 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
  • Thermomechanical dissipative behaviour of CuZr metallic glasses
    By : Sepulveda-Macias, Matias, Molnar, Gergely, Tanguy, Anne
    JOURNAL OF NON-CRYSTALLINE SOLIDS - Published : JUL 15 2024

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