Effect of rolling friction between the particle and wall on particle flow characteristics in the 3D printer feeding device

doi:10.7523/j.issn.2095-6134.2020.02.008

Abstract

Abstract: 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.

Key words: 3D printing, feeding section, rolling friction, mass flow rate

CLC Number:

TK123

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]. , 2020, 37(2): 198-203.

References

[1] 陈庆来. 3D打印技术在塑料工业中的应用[J]. 塑料科技,2019,47(02):91-94.
[2] 史玉升,张李超,白宇,等. 3D打印技术的发展及其软件实现[J].中国科学:信息科学,2015,45(2):197-203.
[3] 张学军,唐思熠,肇恒跃,等. 3D打印技术研究现状和关键技术[J]. 材料工程,2016,44(2):122-125.
[4] Reddy B V, Reddy N V, Ghosh A. Fused deposition modelling using direct extrusion[J]. Virtual and Physical Prototyping, 2007, 2(1):51-60.
[5] 汪甜田. FDM送丝机构的研究与设计[D]. 武汉:华中科技大学,2007.
[6] 王永双. FDM工艺的实验研究[D]. 山东青岛:青岛大学,2015.
[7] Moysey P A, Thompson M R. Modelling the solids inflow and solids conveying of single-screw extruders using the discrete element method[J]. Powder Technology, 2005, 153(2):95-107.
[8] Moysey P A, Thompson M R. Discrete particle simulations of solids compaction and conveying in a single-screw extruder[J]. Polymer Engineering & Science, 2008, 48(1):62-73.
[9] Zhou Y C, Wright B D, Yang R Y, et al. Rolling friction in the dynamic simulation of sandpile formation[J]. Physica A:Statistical Mechanics and its Applications, 1999, 269(2-4):536-553.
[10] 耿察民,钟文琪,邵应娟,等. 双循环流化床颗粒分布特性的三维数值模拟[J]. 中国科学院大学学报,2016,33(2):258-264.
[11] Fukumoto Y, Sakaguchi H, Murakami A. The role of rolling friction in granular packing[J]. Granular Matter, 2013, 15(2):175-182.
[12] 谭骏华,罗坤,樊建人. 软球模型在颗粒流全尺度模拟中的验证和分析[J]. 浙江大学学报(工学版),2015,49(2):344-350.
[13] Ai J, Chen J F, Rotter J M, et al. Assessment of rolling resistance models in discrete element simulations[J]. Powder Technology, 2011, 206(3):269-282.
[14] 陈磊. 基于数值模拟的塑料颗粒3D打印机关键技术研究[D]. 哈尔滨:哈尔滨工业大学,2016.
[15] 白晓鹏. 微孔聚氨酯弹性材料力学性能研究及应用[D].湖南株洲:湖南工业大学,2015.
[16] Cousseau T, Graça B, Campos A, et al. Friction torque in grease lubricated thrust ball bearings[J]. Tribology International, 2011, 44(5):523-531.
[17] Xu D, Karger-Kocsis J, Schlarb A K. Rolling friction and wear of organoclay-modified thermoplastic polyurethane rubbers against steel[J]. Kautschuk Gummi Kunststoffe, 2008, 61(3):98.
[18] Roberts A W, Willis A H. Performance of grain augers[J]. Proceedings of the Institution of Mechanical Engineers, 1962, 176(1):165-194.