Experimental analysis of additive manufacturing parameters on the dynamic response of ABS components

Abstract

Additive manufacturing has been extensively studied under quasi-static load conditions; however, limited research exists on the dynamic response of these printed components, particularly in relation to the influence of manufacturing parameters. This study addresses this critical knowledge gap by investigating the dynamic behavior of Acrylonitrile Butadiene Styrene (ABS) components fabricated via 3D printing. Specifically, the effects of six key printing parameters on the natural frequency and damping ratio of the specimens were systematically analyzed. Using modal analysis based on impulse excitation tests, conducted in accordance with ASTM E1876-22, the study provides robust experimental evidence and insights into the dynamic characterization of printed components. The natural frequency, with results ranging from 72 to 92 Hz, increases with reduced infill density and fewer perimeter walls, while it decreases with a reduction in top and bottom layers. Conversely, the damping ratio, with results ranging from 2.2% to 6% was found to increase significantly with lower print bed temperatures, reduced infill density, and fewer perimeter walls. Notably, specific combinations of parameters were identified to optimize damping performance under dynamic loading conditions. This research contributes novel experimental data and a deeper understanding of the interplay between 3D printing parameters and dynamic mechanical properties, offering a valuable framework for the design and optimization of AM components for dynamic applications.