Calculating Required Damping Rates - Metric Units Calculator

 

METRIC UNITS
Given quantity and unit

F N = force of weight on end of lever

L m = effective length of lever

d m = distance moved by end of lever

t s = time taken to move this distance

w rad/s = speed of rotation

T Nm = torque applied to shaft

M kg = mass

V m/s = velocity of mass

f Hz = frequency of vibration

CONVERSION FACTORS 
1 rad = 57.3°     1 RPM = 0.1047 rad/s     1 lbf.ins = 0.113 Nm
1 Nm = 8.85 lbf.ins    1 lbf = 4.45 N           9.81N = 1 kgf = 1 kp

1. Steady movement in a straight line.

Required rate:=(FL²t)/d Nm/rad/s
F N
L m
t s
d m
Rate Is : Nm/rad/s

2. Steady rotation.

Required rate:=T/w Nm/rad/s

T Nm
w rad/s
 
Rate Is : Nm/rad/s

 

   

3. Deceleration of mass moving in a straight line.

Required rate: =(MVL²)/d Nm/rad/s
M kg
V m/s
L m
d m
 
Rate Is : Nm/rad/s
   

4. Critical damping of vibrating mass.

Required rate: =(MfL²)/0.08 Nm/rad/s
M kg
f Hz
L m
 
Rate Is : Nm/rad/s

 
  
©KINETROL Ltd