APPROBATION OF TRIBOMETER WITH SEPARATED INPUT AND OUTPUT SIGNALS IN INVESTIGATION EXTERNAL FRICTION DYNAMICS STEEL AND BRASS MATERIALS

Abstract

This investigation suggests a method used to determine the evolution of metallic wear and friction by sliding. The problem of external dynamics friction is investigated through the definition of the dynamic characteristics such as damping factor and natural frequency. Some certain automatic control methods were applied for sliding friction contact, including parametric identification, ARX simulation and Newton’s dynamic equation. The suggested approach allows using amplitude-frequency characteristics to assess the dynamic factors (coefficients) under friction interaction. The research findings indicate that the proposed method allows monitoring the evolution of metallic wear and friction. The friction of steel moving over brass was taken as example.

Keywords

• dynamic characteristics
• friction interaction
• input-output model
• damping coefficient
• cyclic movement