Is there a way to simulate how much pressure I need to apply to my live center to cause it to lift an object? See picture below. Physics is not a strong point with me or I would do it by hand.
yap use solidworks motion analysis which is available in solidworks premium version.
Your also missing something, what is the live center-cone velocity?
velocity affects the force required to move an object.
I would say the live centers move in at roughly 40inchs per min. But this is adjustable.
Velocity doesn't make a difference really in the sliding case.
Starting force is much higher than running force and its not just sliding but will also lift an object
Still the velocity makes no difference. The starting force is higher, granted, due to the difference between static and dynamic friction.
thats what i mean sir the higher the velocity the higher the starting force
What? This, as I understand the stated problem, is a live-center on a lathe or other turning machine. The center is not "rammed" into the part at an appreciable velocity. There should be no impact force to speak of.
And even if there was a large velocity, the coefficient of friction - and thus the friction force - remains constant.
hmm??? i don't get you sir his problem is how much force does he needs in order to lift that 20,000lbs of block by pushing a cone between those two blocks
I disagree w/ Haha, this may be viewed as a simple friction problem with the cone sliding into the pocket. What are the two materials (with that weight and operation the presumption might be steel-on-steel)? Then it is a straightforward calculation that may be verified by FEA if desired.
Is it a 10 ton workpiece total? Or is this a simply supported beam (2 ends) where we would apply half the weight on each end?
Yes both are steel. The work piece is pretty symmetrical. Its a freight car axle.
If you were trying to move a 10 ton block up that slope and picked 0.8 for mu then the horizontal force would be about 9,600 lbf. Lifting half that weight would produce half the force. However, mu for a greasy surface can be as low as 0.16.
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