Dynamic investigation and experimental validation of a gear transmission system with damping particles

Abstract

Due to recent technological advances, preciseness in gear transmission has evolved into an essential goal, in which vibration is one of the critical issues. This study demonstrated an experimental platform for a proposed construction model on the spur gear pair, in which damping particles were filled into six through-cavities in gear bodies to verify decreases in vibration. The experimental design involved variable control of input rotational speed, filling ratio, particle size, and material to investigate the damping particles’ behavior. Subsequently, operating both ADAMS and EDEM software established a reliable two-way coupling analysis model. The results confirmed that the filling damping particles effectively reduced system vibration, and both simulation and experimental tests demonstrated a consistent impact. In addition, the damping particle behavior indicated that high rotational speed was more effective in vibration reduction, and increased filling ratio decreased radial vibration. Increases in particle diameter only contributed slightly to vibration reduction. Moreover, although density increase significantly reduced vibration, bead elasticity did not impact vibration. Finally, the dynamic behavior of damping particles with the greatest reduction impact was achieved by applying a soft lead bead in a 5-mm diameter, 48% filling ratio, and the system working at a rotational speed of 600 rpm.

Keywords:

• Damping particles
• discrete element method (DEM)
• gear transmission
• multi-body dynamics (MBD)
• vibration reduction

Future works

Another research topic concerns deeper analysis in designing particle dampers to dampen gear system vibrations efficiently at higher rotational speeds should be conducted. It will consider another cavity shape (not a circle like this paper) that more effectively dampens the system vibration needed to be studied concerning the gear intensity in carry-on force and rotation. In addition, a ratio of cavities volume to overall gear body volume should be investigated. Then a systematic analysis approaches the particle dynamics within the damper cavities needs to be examined in detail, then the essential influence parameters analyzed.

Competing interests

The authors report that there are no competing interests to declare.

Data availability statement

All data generated or analyzed during this study are included in the manuscript.

Additional information

Funding

This research was supported by the Ministry of Science and Technology in Taiwan (R.O.C.) under project numbers: MOST 107-2221-E-008-052-MY2 and 109-2622-E-008-019.