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

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