GearDim, Cylam, VSA

GearDim and Cylam are semi-analytical calculation codes designed to predict the quasi-static behaviors of external and internal cylindrical gears, metal or plastic (for GearDim). GearDim is developed by Mecalam. Cylam is co-developed with Safran and the LaMCoS laboratory of INSA Lyon.

 

VSA is a semi-analytical calculation code designed to predict the dynamic behaviors of external and internal cylindrical gears. VSA is co-developed with the LaMCoS laboratory of INSA Lyon.

Capabilities

  • External or internal
  • Spur or helical
  • Micro-geometry (crowning, tip relief, etc.)
  • Manufacturing errors
  • Misalignments
  • Metalic or plastic gears (for GearDim, considering viscoelasticity)
  • Teeth coupling
  • Parallel contact planes on all teeth
  • Mesh slipped around potential contact lines (outside the action plane)
  • Structural flexibility (shafts, webs, thin rims) taken into account through preliminary FE calculations
  • Tooth bending : mixed FE/analytical influence coefficients method (normal contact effects only)
  • Contact deformations: simplified Boussinesq and Cerruti analytical formulations (normal contact effects only)
  • Mirror method to avoid numerical edge effects

  • Non-loaded kinematic error (GearDim)
  • Non-loaded potential contact lines (GearDim)
  • Slip speeds
  • Loaded transmission error
  • Pressure fields
  • PV and PVT Almen factors
  • Tooth root stress fields
  • Haigh diagrams (Cylam)
  • No-load modal analysis (Cylam)
  • Loads export for structural stresses

  • External or internal
  • Spur or helical
  • Simple or double gearing
  • Micro-geometry
  • Manufacturing errors
  • Misalignements
  • Metalic gears
  • Shaft modeling by FE (beams)
  • Linear bearing modeling
  • Rigid or flexible body (beam)
  • Tooth bending: analytical formulations (Weber-Benachek)
  • 1D contact on the theoretical contact line (in the action plane)

  • Linear load
  • Pressure field
  • PV Almen factor
  • Tooth root stresses
  • Loaded transmission error
  • Dynamic coefficient
  • Node displacements, accelerations and forces
  • Meshing stiffness

  • Design modules for GearDim
  • Consideration of double gearing for GearDim
  • Planetary gear models (dynamic modeling)
Galerie

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