Damping of longitudinal vibrations of a cylindrical rod

Oscillation of an underground cylindrical rod located in infinite medium and equipped with a dynamic vibration damper is considered. The vibrations the structure occur from action harmonic forces along longitudinal axis bar. possibility decreasing amplitude using two-mass absorber series connection masses parameters absorbers were optimized for different values environmental parameters. It was found that fairly high operating efficiency main damping first mode, additional can be used to reduce second resonance. In this case, both dampers operate on separate modes. Using significantly formation structure. expansion quenching zone achieved comparison single-mass quencher.