CASES FOR SHOCK ABSORBER CALCULATION

ARC shock absorbers provide linear deceleration and therefore superior to other kinds of daming elements. It is easy to calculate around 90% of applications knowing only the following 4 parameters: Mass to be decelerated, Impact Velocity, Propelling Force and Cycles per hour.

Mass without propelling force

Mass without propelling force

Mass with propelling force

Mass with propelling force

Mass with motor drive

Mass with motor drive

Mass on driven rollers

Mass on driven rollers

Mass with propelling force up

Mass with propelling force up

Mass with propelling force down

Mass with propelling force down

Free Falling Mass

Free Falling Mass

Mass lowered at controlled speed

Mass lowered at controlled speed

Mass raised at controlled speed

Mass raised at controlled speed

Mass rolling-sliding down incline

Mass rolling-sliding down incline

Falling mass about pivot point

Falling mass about pivot point

Swinging Mass With Propelling torque

Swinging Mass With Propelling torque

Swinging mass with propelling force

Swinging mass with propelling force

CALCULATION

    SYMBOL USED

  1. E1 Kinetic energy per cycle Nm
  2. E2 Propelling force energy per cycle Nm
  3. E3 Total energy per cycle (E1 + E2) Nm
  4. E4 Total energy per hour (E3*c) Nm/hr
  5. We Effective weight Kg
  6. W Mass to be decelerated Kg
  7. n Number of shock absorbers (in parallel)
  8. ω Angular velocity at impact rad/s
  9. F Propelling force N
  10. c Cycles per hour 1/hr
  11. P Motor power kW
  12. v Velocity at impact m/s
  13. vD Impact velocity at shock absorber m/s
  14. M Propelling torque Nm
  15. I Moment of Inertia kgm2
  16. g Acceleration due to gravity = 9.81 m/s2
  17. h Drop height (excl. shock stroke) m
  18. s Shock absorber stroke m
  19. L/R/r Radius m
  20. Q Reaction force N
  21. μ Coefficient of friction
  22. t Deceleration time s
  23. d Deceleration m/s2
  24. α Side load angle °deg
  25. a Angle of incline °deg
  26. ST Stall torque factor (normally 2.5) 1 to 3