Hi again
I found the solution.
http://www.spaceagecontrol.com/calcsinm.htm
Very simple, and it conforms to my actual "real-life" measurements.
Now I just wonder how the sin() and integration appeared on the scene.
Can you outline for me more specifically how it would look like ?
I assume it is the "length" (time) from turn-around-point(=t0) to peak acceleration, that is necessary.
That time should be =(1/hz)/4
How to get from there ? ...integrate from t0 to (1/hz)/4 ?
Hi there
Given a result from an accelerometer, mounted on a vibrating machinery.
I would like to be able to calculate the physical amplitude. That is the actual movement of the vibration.
I'm sure it should be possible, but my attempt to manipulate the formula of acceleration has not resulted...
Yes, I let the 360N/mm -> 360kN/m
I now understand you set the mass to 12kg not 120N, in the equation, as I expected.
Ít surprises me a little. Why in kg and not N ?
ohh you see spring K5 and K6 as being in series.
Well there might be a catch to that, since the eccentric is by the propelling motor is attached to the frame.
I still do not get what you did to the mass m in the equation (=240N ?)
I cannot get your formula to result in 27,6Hz :o(
The central object, I assume you mean the eccentric, it drives the vibrator.
It is a motor with an eccentric attaached to the shaft.
The 2 masses are moving in one direction (the 30° from horizontal).
I understand how you get the 4kg/mm to 40N/mm, since it is essentially the same.
But then...
I have a construction of a vibrator (industrial use).
I should be able to calculate the natural frequency, by means of Hooke's law.
Since I have a physical device I already have a "real world" measurement of the Natural frequency.
The problem is: How to calculate it?
I have tried to do some...