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

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

  • A review of characteristic lengths in the coupled criterion framework and advanced fracture models
    By : Molnar, Gergely, Doitrand, Aurelien, Estevez, Rafael, Gravouil, Anthony
    COMPTES RENDUS MECANIQUE - Published : 2025
  • Study of load distribution and ellipse truncation for angular contact pitch bearings-blade assembly subjected to external loads
    By : Duquesne, Remy, Nelias, Daniel, Morterolle, Sebastien, Ancey-Rocchi, Stella
    TRIBOLOGY INTERNATIONAL - Published : APR 2025
  • Influence of symmetry breaking on the multi-stable responses of a vibro-impact system: Experimental and numerical investigation
    By : Zuniga, Pau Becerra, Baguet, Sebastien, Prabel, Benoit, Grenat, Clement, Dufour, Regis
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Published : MAR 1 2025
  • An ultra-sensitive diamagnetic levitation accelerometer with quasi-zero-stiffness structure
    By : Wang, Yang, Xu, Yuanping, Yang, Lu, Zhou, Jin, Mahfoud, Jarir, Jin, Chaowu
    MEASUREMENT - Published : MAR 15 2025
  • Development of decision support tools by model order reduction for active endovascular navigation
    By : Badrou, Arif, Duval, Arnaud, Szewczyk, Jerome, Blanc, Raphael, Tardif, Nicolas, Hamila, Nahiene, Gravouil, Anthony, Bel-Brunon, Aline
    ARTIFICIAL INTELLIGENCE IN MEDICINE - Published : MAR 2025
  • Analysis of stress intensity factor oscillations in 3D cracks using domain integrals and the extended finite element method
    By : Gonzalez-Albuixech, Vicente F., Giner, Eugenio, Gravouil, Anthony
    COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING - Published : MAR 1 2025
  • Chemo-Enzymatic Synthesis of Mixed Docosahexaenoic Acid Phosphatidylcholine Conjugates
    By : Lehoux, Jordan, Grosjean, Felix, Lobo, Alexandre, Lagarde, Michel, Bernoud-Hubac, Nathalie, Durand, Thierry, Crauste, Celine
    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY - Published : MAR 5 2025
  • Truncation effects on circular EHL contact film thickness
    By : Patrigeon, Tristan, Philippon, David, Devaux, Nicolas, Morales-Espejel, Guillermo E., Fillot, Nicolas
    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY - Published : FEB 2025
  • Quantifying the effect of material stiffness and wall thickness on the mechanical properties of ankle-foot orthoses manufactured by material extrusion
    By : Delbruel, Valentine, Banoune, Abder, Tardif, Nicolas, Duchet-Rumeau, Jannick, Elguedj, Thomas, Chevalier, Jerome
    PROGRESS IN ADDITIVE MANUFACTURING - Published : FEB 2025
  • Spatial Abilities and Endodontic Access Cavity Preparation: Implications for Dental Education
    By : Collet, Philippine, Tra, Robenson, Reitmann, Anna, Valette, Sebastien, Hoyek, Nady, Maurin, Jean-Christophe, Ducret, Maxime, Villat, Cyril, Santamaria, Julie, Richert, Raphael
    EUROPEAN JOURNAL OF DENTAL EDUCATION - Published : FEB 2025

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