颗粒与壁面间滚动摩擦对进料装置颗粒流动特性的影响

doi:10.7523/j.issn.2095-6134.2020.02.008

中国科学院大学学报 ›› 2020, Vol. 37 ›› Issue (2): 198-203.DOI: 10.7523/j.issn.2095-6134.2020.02.008

颗粒与壁面间滚动摩擦对进料装置颗粒流动特性的影响

邰曈, 王彪, 唐天琪, 何玉荣

哈尔滨工业大学能源科学与工程学院, 哈尔滨 150001

收稿日期:2019-01-21 修回日期:2019-04-28 发布日期:2020-03-15
通讯作者: 何玉荣
基金资助:
国家自然科学基金重大研究计划培育项目（91534112）资助

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

TAI Tong, WANG Biao, TANG Tianqi, HE Yurong

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Received:2019-01-21 Revised:2019-04-28 Published:2020-03-15

摘要/Abstract

摘要： 3D打印是一种革命性的数字化生产模式。针对应用于熔融沉积成型打印机进料的一种螺杆挤出装置，基于离散单元法分别对3种颗粒（聚乳酸、聚丙烯和聚氨酯）的输运过程进行数值模拟，研究颗粒与壁面间滚动摩擦系数对输运段出口颗粒流动特性的影响。模拟结果表明，随着滚动摩擦系数的增大，3种颗粒的出口质量流量和速度均匀性均减小；3种颗粒总转矩随着滚动摩擦系数的增大而增大，滚动摩擦及接触力引起的转矩随滚动摩擦系数的变化趋势与总转矩一致。该研究成果对3D打印进料方式的优化与进料颗粒的选择具有一定参考价值。

关键词: 3D打印, 输运段, 滚动摩擦, 质量流量

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

中图分类号:

TK123

邰曈, 王彪, 唐天琪, 何玉荣. 颗粒与壁面间滚动摩擦对进料装置颗粒流动特性的影响[J]. 中国科学院大学学报, 2020, 37(2): 198-203.

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.

参考文献

[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.

颗粒与壁面间滚动摩擦对进料装置颗粒流动特性的影响

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

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

本文评价

访问统计

联系我们