Damping Terminology



TERM SYMBOL DEFINITION
Structural Damping g

Quality or Magnification Factor

 Q
Viscous Damping Ratio
(% of Critical Damping)
Loss Factor
(Loss Tangent)
Logarithmic Decay
Critical Damping Factor Cc



Damping Materials used for Passive Damping


  • Viscoelastic Materials (VEM)
    • Polymers
    • Rubbers
    • Pressure Sensitive Adhesives
    • Urethanes
    • Epoxies
    • Enamels
  • Viscous Fluids
    • Silicone Oil
    • Grease
  • Magnets

  • Smart Materials
    • Piezoceramics
    • Electrorheological (ER) Fluids
    • Magnetorheological (MR) Fluids
    • Magnetostrictives
    • Shape Memory Alloys

  • High Damping Alloys

  • Impact and Particle Damping