Design Rules for Laser Beam Melted Particle Dampers

DS 116: Proceedings of the DESIGN2022 17th International Design Conference

Year: 2022
Editor: Mario Štorga, Stanko Škec, Tomislav Martinec, Dorian Marjanović
Author: Tobias Ehlers, Roland Lachmayer
Series: DESIGN
Institution: Leibniz Universit
Section: Engineering Design Practice
Page(s): 2443-2452
DOI number: https://doi.org/10.1017/pds.2022.247
ISSN: 2732-527X (Online)

Abstract

By means of additive manufacturing, especially laser powder bed fusion, particle dampers can be integrated locally into structural components and thus significantly reduce component vibrations. However, detailed design recommendations for additively manufactured particle dampers do not yet exist. The research question in this paper is: How can the effect of particle damping be described as a function of excitation force, cavity width and cavity length? For beams made of AlSi10Mg, it is shown that a powder-filled cavity of 2.5% to 5% is sufficient to increase the damping by more than x10.

Keywords: additive manufacturing, design guidelines, lightweight design, functional integration, particle damping