EasternTIGERS
New Member
when you say fooling around please explain, what sort of equipment did you play with
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That is a very dangerous way to look at real life mechanical systems. That is like saying statistics, or worse, computer models are accurate. We all know they are as good as the designers/programmers who are normally so far up themselves that .... choose your own ending. SHM is as far as I would trust any analogy.
Mike.
Originally Posted by MrAl **broken link removed** "We can study the equivalent electrical system and gain understanding of the mechanical system this way"
Mike:
That's a very extreme view but if you want to take that stance than you have to say that electrical simulation is dangerous too and spice is a "dangerous" thing too because a circuit may not work the way the spice model does. Obviously that's not the view of most engineers, and also this concept is not new and was taught in colleges like NJIT for example. Looking at modern control systems analysis we can see that these concepts are also applied to airplanes and other flying devices so something must be working pretty well.
It is well known that the differential equations for both electrical and mechanical systems are the same and can be treated the same way and that is what theory is all about. The application of that theory is always up to the engineer or technician and if they dont know what they are doing then they will certainly blow up something even without using theories like this.
The analogies do not stop at mechanical systems either, and also apply to thermal systems and even fluid flow systems. For more analogies for the capacitor:
Electrical capacitance: i=C*dv/dt
Translational mass: F=M*dv/dt
Rotational mass: T=J*dw/dt
Fluid capacitance: Q=C*dP/dt
Thermal capacitance: C*dT/dt
hey there is an actual branch of engineering for this.. it's called mechatronics...!
mechy? hmm... here's a quick quiz (I had to solve this one for a customer) - how do you mount an accelerometer to a garage door spring?
I'd never mount an accelerometer to a spring! (no way to work!)
Mount it to the door!
Boncuk
You didn't read the whole post. He isn't using the spring to open a door.
You didn't read the whole post. He isn't using the spring to open a door.
mechy? hmm... here's a quick quiz (I had to solve this one for a customer) - how do you mount an accelerometer to a garage door spring?
the thing was a punching bag with a garage door spring "skeleton"
I'd never mount an accelerometer to a spring! (no way to work!)
Mount it to the door!
Boncuk
but i did and it did...I'd never mount an accelerometer to a spring! (no way to work!)
Mount it to the door!
Boncuk
Hi Boneheadcuk - since there are no doors on a punching bag, then I'd say your whole point is, well pointless. Don't know why I would be lectured by a member who can't read, understand and respond in a relevant way to a simple post.
Hi BlackOut,
Who told you I didn't?
I guess that problem is over your head.
Mounting an accelerometer to a spring is as good as telling a camel to jump in a sunny day in the desert.
Hi Blackout,
thanks for the flowers!
I don't try to lecture anybody, but I'm afraid you really can't read properly (so do I, but there is no big difference between brownout and blackout).
You can't mount an accelerometer to a spring! That's it!
Capice?