中国塑料 ›› 2021, Vol. 35 ›› Issue (6): 68-73.DOI: 10.19491/j.issn.1001-9278.2021.06.011

• 加工与应用 • 上一篇    下一篇

熔融沉积工艺成型材料的力学性能研究

关天民, 李钰, 翟贇(), 雷蕾   

  1. 大连交通大学机械工程学院,辽宁 大连 116028
  • 收稿日期:2021-01-11 出版日期:2021-06-26 发布日期:2021-06-23

Study on Mechanical Properties of Material Formed with Fused Deposition Molding Technology

GUAN Tianmin, LI Yu, ZHAI Yun(), LEI Lei   

  1. School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China
  • Received:2021-01-11 Online:2021-06-26 Published:2021-06-23
  • Contact: ZHAI Yun E-mail:yunzhai5@vip.163.com

摘要:

结合矩形环状结构工件的实际受力工况,首先对样件结构进行三维(3D)建模,再将模型导入仿真软件中完成不同受力条件下的静力学分析, 得到样件等效应力、变形云图,确定样件产生应力集中的区域。采用熔融沉积成型(FDM)工艺,加工出不同沉积角度的测试样件,对成型的样件分别进行拉伸实验。结果表明,当力与沉积角度方向呈45 °时,断裂强度相对0 °增长了63.80 %,相对90 °增长了32.81 %,得到了成型工艺与力学性能各向异性之间的关系,为特定工况下材料的成型工艺提供了参考依据。

关键词: 熔融沉积, 各向异性, 断裂强度, 有限元仿真, 应力分布

Abstract:

Based on the actual stress condition of a rectangular ring structure, the sample structure was firstly modeled in a 3D mode, and then the model was imported into the simulation software to complete the static analysis under different stress conditions. The equivalent stress and deformation cloud map of the sample was obtained, and the stress concentration area of the sample was determined. The test samples with different deposition angles were processed by a melt deposition molding method. Tensile tests were carried out on these samples. The experimental results indicated that when the direction of force and deposition angle was 45 °, the fracture strength increased by 63.80 % corresponding to 0 ° and 32.81 % corresponding to 90 °. The relationship between the forming process and the anisotropy of mechanical properties was obtained. This provides a reference for the material forming process under specific working conditions.

Key words: melt deposition, anisotropy, fracture strength, finite element simulation, the stress distribution

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