ALLOWANCE FOR THE EFFECT OF CLEARANCES DUE TO DYNAMIC UNLOADING OF LINKAGES

The effect of dynamic unloading due to the presence of elastic elements mounted between the output link and the housing is analyzed on the basis of the proposed models of plain and spatial linkages with allowance for clearances in and compliance of their hinges. It is shown that complete dynamic unloading may result in repeated impact reversals in the clearances and a significant reduction in the lowest natural frequency. Results of computer simulation are presented. Methods for eliminating extraneous dynamic effects are proposed.