Recent content by mcpaddler

Vibrating feeders depends on displacement of the vibration on the part, and frequency to get time of transport. Fairly straight forward, except for when you transfer too much force or not enough to move the part(s). The exciter F=ma transfer to the part I imagine is the tough part. Here is a...

from normal bell, frequency tuner, and other oscillations it is all f = sqrt (k/m), as the resonator mass decreases for a constant stiffness the frequency increases. or as stiffness increases the frequency increases. the equation above takes into account the geometry and young's modulus of...

I would think you also need the rotating mass of the max weight of the spool of wire on the drum as that has to stop as well. And I would add the energy in the cable. If you just stop the drum, the force that is unspooling the cable and its cable spring tension will override the brake, or is...

From Jack we have velocity = F * (material and geometric constant). On the force side of the equation above we need acceleration, which requires knowing velocity? That does not work when you process it through. I think the beam analogy is not right, we have a pivot and that equation is for...

I have a problem of a vehicle that impacts a barrier and knocks it over. At what minimum velocity does the barrier tip? (assuming it did not slide and there is no damage absorbing energy in the collision), sort like Barrier 2 ft wide, 2 ft tall, 6 ft long, 3600 lbs. Vehicle 2000 lbs, bumper...

Flipping forward or rearward is pitch stability, flipping on a sideslope would be lateral or roll stability. For your problem the tipping axis is the relationship between the axis of support (normal line from ground contact point of the closest wheel that goes through the wheel center) and line...

I no longer a student, but always learning. love the site, seems to be a lot of bright people here. thinking of getting back into doing problems out the long way - by hand vs. simulation.