olympic:
I have seen a case where it appears that when a pump was operated near shut-off head, the load variance at the impeller created vibrations that were transmitted to the drive end which was coupled by a long v-belt drive to the motor. Under normal operation, the pump operated with no...
tnteng:
I would suggest you need to build something strong enough and not worry about theoretical matters. The initial push will require the greatest force so start with something with enough force to slide the pipe without rolling. That is the worst case. Now look at the equipment required...
Nuisance:
You may have been dozing when it was taught, but yield stress is the level of stress when the material transitions from elastic to plastic deformation, or in the case of brittle materials to failure. As mentioned above, you must include a safety factor which provides adequate margins...
someonesdad has the right idea I think. If possible install an air wand behind the roller so that air is aimed in the direction of travel of the film. Unless there is high load on the roller, you can get a bit of a layer of air against the roller that will cushion the film. Since you are...
trainguy:
You stated that the acceleration was a triangular pulse, so the force would be, for no energy absorbed by anything, a similar triangular pulse. The maximum acceleration would provide a maximum force. The integral of the either would be equivalent to the kinetic energy of course...
