Research Team : Mechanical Systems and Contacts

The SMC team is positioned at the interface between the mechanics of lubricated contacts and the static and dynamic analysis of mechanical systems.

The main challenges and issues are :

  • take into account phenomena that develop on very large temporal and spatial scales
  • deal with couplings between physical phenomena of different kinds.

They can be broken down into the following themes :

  • Analysis of mechanical transmissions
  • Stress on lubricated contacts, damage
  • Multi-scale and multi-physics coupling

The main applications are for mechanical systems where contacts play a major role in behaviour and/or integrity such as gear transmissions, motors and machine components in the broadest sense.

Manager : David DUREISSEIX

  • Thermal memory effect
  • 'Measurement' of pressure spike & lubricant rheology
  • Pressure perturbations due to an indent crossing a contact
  • Numerical prediction of flow through a spur gear (Marchesse et al. 2015)
  • Stress at the root of a spiral bevel gear
  • Adhesive contact
  • Textured cylinder-liner surface
  • Visco-elastic contact
  • Contact spalling
  • Pressure distribution between an oil control ring and a textured liner
  • Surface measured with roughness meter (Amplitude ~1 µm, surface size ~ 600 µm x 480 µm)
  • Efficient multigrid FE solver
  • 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...
  • Boundary layer in an EHL contact
  • Plane stresses in a part subjected to an explicit dynamic impact (source: Jean Di Stasio's Michelin CIFRE PhD)
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Thematics Axis