Enhancing vibration damping properties of additively manufactured viscoelastic structures through process parameter optimization

Abstract

With the increasing use of additive manufacturing (AM) in diverse fields, printed structures are inevitably exposed to vibrations, which can result in fracture, fatigue, and noise. Present study aims to enhance the damping characteristics of the final part by incorporating viscoelastic materials into the primary structure using multi-material AM. The effects of process parameters on the vibration damping characteristics of printed viscoelastic structures were investigated through modal analysis and design of experiments. Results show that higher nozzle temperature, smaller layer height, lower deposition speed and smaller raster angle contribute to higher resonant frequencies and loss factors of the final parts.

Keywords:

• Additive manufacturing
• 3D print
• fused filament fabrication
• thermoplastic polyurethane
• vibration
• damping

Acknowledgments

We acknowledge the experimental facilities MécaRhéo (vibration and wave propagation platform) from LEM3 (Université de Lorraine-CNRS UMR 7239) funding by the French Ministry of Research (DRRT), the regional Council “Région Lorraine” and the European Regional Development Fund (FEDER). Also, the authors would like to thank the research platform Lorraine Fab Living Lab® for the technical assistance in this research.

Disclosure statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Funding

This authors study was supported by the French Ministry of Research (DRRT), the regional Council “Région Lorraine” and the European Regional Development Fund (FEDER)