Usage of mechanical impedance method for investigation amplitude frequency characteristics of elastic junction elements

Abstract

In determining the complex frequency characteristics of mechanical systems, the elastic and radiation features of the inter–element contact layers (oil layer) need to be considered that will have on influence an the transfer function. To investigate the characteristics of details contact the methods of transient mechanical impedance was used. Theoretical study is presented to assess the significance of oil contact surface on the character of complex mechanical resistance. The influence of elastic features of contact link elements mechanical system on transient function were investigated by the mechanical impedance methods presented as “piston–rod” and “rod – crankshaft“ systems. The transient impedance module increases till 6–8 dB by oil layers of the inter–element junction in the range of resonance frequency