Vol.22, No.1, 2022, pp. 25–28
UDC:

This article compares the vibrational behaviour variability of acrylonitrile butadiene styrene (ABS) test specimens obtained by additive manufacturing (AM) with three different deposition directions. Test specimens are subjected to forced vibration on an electromechanical shaker, and the frequency response amplitude is measured using accelerometers. Natural frequency and Q-factors are discussed. The experiment shows that the direction of deposition generates a material damping variability of up to 30 %. The parameters identified during experiments could be further used to develop finite element numerical models to virtually validate 3D printed structures generated with the same process parameters as the test samples.

Keywords: ABS (acrylonitrile butadiene styrene), vibration, deposition direction, frequency response function, additive manufacturing