Threaded Components Under Axial Harmonic Vibration, Part 2: Kinematic Analysis

A kinematic analysis is presented for the twisting of threaded components loaded by gravity and subjected to axial harmonic vibration. It is shown that the complex motions of twisting due to the interaction of the applied vibration and the resulting unsteady friction can be broken down and described as a sequence of simple motion forms. The analysis provides significant insight into the mechanisms of twisting both with and against load experimentally explored in Part 1 of this paper. Several solutions which are representative of the observed phenomena are developed and simulation results are presented.