3D printing is one of the revolutionary production modes. In this work, a screw extrusion device for the fused deposition modeling printer was applied, and the transport processes of three kinds of particles (polylactic acid, polypropylene, and polyurethane) in the device were simulated by using the discrete element method. This work aims to study the influence of rolling friction between the particle and wall on the characteristics of outlet particles in the feeding section. The results show that, with the increase of rolling friction coefficient between the particle and wall, the outlet mass flow rate and the velocity uniformity for the three particles are reduced and the total torques for the three particles increase. The tendencies of friction torque and contact torque are identical to that of the total torque, with the increase of rolling friction coefficient. The research results have important implication for the optimization of 3D printer feeding methods and the selection of feeding particles.
TAI Tong
,
WANG Biao
,
TANG Tianqi
,
HE Yurong
. Effect of rolling friction between the particle and wall on particle flow characteristics in the 3D printer feeding device[J]. Journal of University of Chinese Academy of Sciences, 2020
, 37(2)
: 198
-203
.
DOI: 10.7523/j.issn.2095-6134.2020.02.008
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