ROTORINSA®

ROTORINSA® is a finite element software devoted to the prediction of the steady-state dynamic behavior of rotors in bending.

Main Characteristics

Elements of rotor Effects - Characteristics Degres of Freedom (dof)
Shafts The effects considered are :
  • Shear effect
  • Axial force
  • Section inertia
  • Gyroscopic effect
  • Magnetic attraction
Elements of beam in bending
2 nodes with 4 dof
Disks The effects considered are :
  • Inertia
  • Gyroscopic effect
Rigid
1 node with 4 dof per node
Bearings Characteristics of :
  • stiffness
  • damping
variable with the speed of rotation
1 or 2 nodes with 2 dof in displacement per node
Specific elements Defined by the matrices :
  • mass
  • stiffness
  • gyroscopic
  • damping
1 or 2 nodes with 4 dof in displacement per node

Capabilities Graphic displays
  • - Static deflection (gravitational and concentrated forces)
  • - Frequencies and mode shapes, damping factors, instabilities
  • - Mass unbalance response
  • - Asynchronous force response
  • - Harmonic force fixed in space response
  • - Maximum stresses, maximum loads on bearings
  • - Energy in elements
  • - Rotor geometry
  • - Finite element model
  • - Modes of the modal basis
  • - Campbell diagram
  • - Modes in rotation
  • - Deflection due to mass unbalance, asynchronous force, harmonic force
  • - Response to Mass unbalance, Asynchronous forces, harmonic forces