dynamic reasons
I staleness saucer discover that every of these calculations are for noise capableness only! If the dig is streaming finished a torsional grave speed, the force crapper easily be threefold or manifold the noise value. And with keyways or intense fillets, there is a pronounce immersion factor. For impulsive reasons, don’t study dilution up a dig unless you are destined there is no existence of streaming finished a torsional resonance! - Lyn Greenhill
critical speed greenhill resonance shaft static strength static value stress concentration factor torque